a lot of energy is released when hydrogen and oxygen react to make water. the fuel cell uses the same reaction, but what happens to the energy?

Answers

Answer 1

Answer:

The energy is released/harnessed in the form of an electrical current.  

Explanation:

The concept of a fuel cell is to harvest the energy of the H2 + O2 reaction in the form of electrical current, not as light, heat, and sound.  Although energy in the light, heat, and sound provide a higher entertainment value, the electricity produced in a fuel cell proves useful in powering computers, electric cars, phones, televisions, toasters, and other electrical and electronic devices.  The TV, phone, and computer provide substitute entertainment.

The amount of energy released is the same.  It is simply in a different form.  


Related Questions

conclusions: how do the results for methane compare to those for butane? does your experimental data verify charles's law?

Answers

The rule of conservation of mass only holds when the combined masses of the reactants and products are equal. As a result, if we know the masses of one reactant and one product, we can calculate the masses of the other reactant and product.

We know that the reactants in this case have beginning concentrations of 25.0 g of lithium and 25.0 g of bromine. The molar mass of lithium is 6.939 g/mol, whereas the molar mass of bromine is 159.808 g/mol.

In order to convert the mass of any material into a unit of moles the temperature and volume of methane and butane must be measured and recorded at various pressures and temperatures in an experiment to confirm Charles's Law. The data from the experiment must then be analyzed to determine whether the relationship between temperature and volume is direct and linear, as predicted by Charles's Law.

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a solution of formic acid (hcooh) has a ph of 2.29. how many grams of formic acid are there in 100.0 ml of solution?

Answers

There are 593.4 grams of formic acid in 100.0 mL of a solution of formic acid (HCOOH) that has a pH of 2.29.

To calculate the grams of formic acid in 100.0 mL of solution, three procedures are performed:

Calculation of the molar concentration of the formic acid solutionCalculation of the number of moles in the 100 ml of formic acid solutionConversion from moles to grams

Calculation of the molar concentration of the formic acid solution

To calculate the concentration of a solution as a function of pH, the following formula is used:

pH = - log [H3O+]

where [H3O+] is eliminated

2.29 = - log [H3O+]

log[H3O+] = -2.29

10-2.29 = [H3O+]

[H3O+] = 129M

Calculation of the number of moles in the 100 ml of formic acid solution

Then the number of moles in 100 ml of solution is calculated.

If in 1000 ml of solution there are 129 moles of formic acid

So in 100 ml of solution there are x moles of formic acid

X mole of formic acid = 100 ml x 129 moles / 1000 ml

X moles of formic acid = 12.9

Conversion from moles to grams

Then with the molecular weight of formic acid (46 g/mol) the grams of this compound in 100 ml of solution are calculated.

If in 1 mole of formic acid there are 46 grams of compound

So in 12.9 moles there are x grams of compound

X g of formic acid = 12.9 mol x 46 g / 1 mol

X g of formic acid = 593.4

Therefore, in 100.0 mL of solution there are 593.4 g of formic acid.

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Each of the given reactions is catalyzed by an enzyme. For each reaction, classify the enzyme according to one of the six categories suggested by the International Union of Biochemistry. Consider the reaction. H 2 O + A dipeptide and water forms two amino acids. Which category does the catalyzing enzyme belong to?

Answers

Considering the given reaction, H 2 O + A dipeptide and water forms two amino acids, hydrolase category does the catalyzing enzyme belongs.

The catalyzing enzyme in the reaction H2O + A dipeptide → two amino acids belongs to the Hydrolase category. This is because the enzyme catalyzes the hydrolysis of a dipeptide, which involves the addition of water (H2O) to the dipeptide to form two amino acids. Hydrolases are enzymes that catalyze the hydrolysis of various types of biological molecules, such as carbohydrates, lipids, and nucleic acids.

1. Esterases, which catalyze the hydrolysis of esters, breaking the bond between the carboxyl and alcohol groups.

2. Lipases, which catalyze the hydrolysis of lipids, breaking the bond between the glycerol and fatty acid groups.

3. Peptidases, which catalyze the hydrolysis of peptides, breaking the bond between the amino acids.

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a concentrated aqueous solution of sulfuric acid (h2so4) has a density of 1.509 g/ml and contains 10% sulfuric acid by mass. calculate the molality of sulfuric acid.

Answers

Molality of sulfuric acid is 1.1.

As we know that density of solution = 1.509 = mass of solution \ Volume.

10% of [tex]H{_2}SO_4[/tex] by mass,

[tex]\frac{10}{100} \times 1.509[/tex] v (g)

As the mass of solvent [tex]=\frac{90}{100}\times 1.509 V(g)[/tex]

98 g of [tex]H{_2}SO_4[/tex] contains moles = 1,

[tex]\frac{10 \times 1.509 V g}{100}[/tex] of [tex]H{_2}SO_4[/tex] contains moles = [tex]\frac{1.509 .v}{10 \times 98}[/tex] moles

Molality = moles of solute/ Mass of solvent (kg)

             =[tex]\frac{1.509 \times 100 \times 1000}{10 \times 98 \times 1.509 .V (kg)}[/tex]

             = 1.1

Hence, the Molality of sulphuric acid is 1.1.

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estimate the specific gravities (gas) for methane and propane. their molecular weights are shown inside the back cover or in the book appendices. (commercial natural gas and commercial propane are mostly methane and propane, with small amounts of other substances, which may be ignored for this problem.) which is more dangerous, a propane leak or a methane leak? why?

Answers

The specific gravity of methane is 0.554 and the specific gravity of propane is 1.52.

The specific gravity of a gas can be calculated using the formula:

Molecular Weight of Gas / Molecular Weight of Air = Specific Gravity

For methane:

Molecular weight of methane = 16.04 g/mol

Molecular weight of air = 28.97 g/mol

Specific Gravity = 16.04 g/mol / 28.97 g/mol = 0.554

For propane:

Molecular weight of propane = 44.10 g/mol

Molecular weight of air = 28.97 g/mol

Specific Gravity = 44.10 g/mol / 28.97 g/mol = 1.52

A propane leak is more dangerous than a methane leak because propane is heavier than air, so it sinks and can collect in low-lying areas such as basements and crawl spaces, where it can be ignited by a spark or flame. Methane, on the other hand, is lighter than air and tends to rise, making it less likely to accumulate in dangerous concentrations. Additionally, propane is more explosive than methane, so a propane leak can result in a larger and more destructive explosion.

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the complete question is :

Estimate the methane and propane-specific gravities (gas). 16.04 and 44.10 molecular weights respectively. (In commercial natural gas and propane, the main components are methane and propane; minor amounts of other compounds may be disregarded for this issue.) A propane leak or a methane leak, which is more hazardous? why?

what is the process of splitting a uranium atom called?

Answers

Answer:

Nuclear fission

HNO3 + H3PO3 → NO + H₂PO4+H₂O (Acidic)
What is the complete step by step oxidation reduction reaction?

Answers

Answer:

The reaction provided is not a redox reaction. The equation shows the neutralization reaction between Nitric acid (HNO3) and Phosphoric acid (H3PO3) to produce Nitrogen monoxide (NO), Dihydrogen Phosphate (H2PO4) and water (H2O).

When two or more acids are mixed together, they can neutralize each other. This is called a neutralization reaction. The acid and the base will react to form a salt and water. In this case, Nitric acid is the acid and Phosphoric acid is the base.

The equation for this neutralization reaction can be balanced as follows:

HNO3 + H3PO3 → NO + H2PO4 + H2O

Where HNO3 = Nitric acid

H3PO3 = Phosphoric acid

NO = Nitrogen monoxide

H2PO4 = Dihydrogen Phosphate

H2O = water

The reaction is acidic in nature due to the presence of H+ ions in the products.

In summary, the reaction provided is a neutralization reaction, not a redox reaction. The equation shows that Nitric acid and Phosphoric acid neutralize each other to form Nitrogen monoxide, Dihydrogen Phosphate and water. The reaction is

what volume of 6 m acetic acid is required to fully react with 0.5 g of sodium bicarbonate (nahco3)?

Answers

The volume of 6 M acetic acid required to fully react with 0.5 g of sodium bicarbonate is 0.099167 mL.

To determine the volume of 6 M acetic acid required to fully react with 0.5 g of sodium bicarbonate (NaHCO3), we need to use the balanced equation for the reaction between acetic acid and sodium bicarbonate.

The balanced equation is:

CH3COOH(aq) + NaHCO3(aq) → CH3COONa(aq) + H2O(l) + CO2(g)

From the balanced equation, we know that one mole of acetic acid reacts with one mole of sodium bicarbonate.

we know that the molarity is moles of solute per liters of solvent, so the number of moles in 0.5 g of sodium bicarbonate is 0.5/84 = 0.00595 mol

And since one mole of acetic acid reacts with one mole of sodium bicarbonate, we know that we need 0.00595 mole of acetic acid to fully react with 0.5 g of sodium bicarbonate.

If we know the molarity of acetic acid, we can calculate the volume of acetic acid required to react with 0.5 g of sodium bicarbonate. we have

V = n / M = 0.00595 / 6 = 0.00099167 L = 0.099167 mL

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How many milligrams are in 5.7 grams

Answers

Answer:

5700 milligrams

Explanation:

To go to a smaller unit you move the decimal to the right.

How many milligrams are in 5.7 grams? The answer is 5,700 milligrams.
1 gram equals to 1,000 milligrams. So to find how many milligrams are in 5.7 grams, simply take 5.7 and divide that by 1,000, which gives you 5,700.

a student mixes 50.0 ml of 0.10 m pb(no3)2 solution with 50.0 ml of 0.10 m kcl. a white precipitate forms, and the concentration of the chloride ion becomes very small. which list places the concentrations of the remaining ions in order of decreasing concentration?

Answers

[ NO3-] > [K+] > [Pb2+] is correctly  places the concentrations of the remaining ions in order of decreasing concentration.

As from the given data, we know that,

       Pb(NO3)2 + 2KCl = PbCl2 + 2KNO3

we know,

Pb(NO3)2= 0.005mol

2KCL = 0.005mol

PbCl2 = 0.0025mol

2KNO3 = 0.005mol

SO,

K+ and NO3- spectators 2NO3- for each K+

Pb and K+ are equal but some Pb precipitate

Hence, giving the concentration order as,

[ NO3-] > [K+] > [Pb2+] and the concentration of the chloride ion becomes very small and hence it is negligible.

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hich of the following options correctly describe entropy? select all that apply. multiple select question. the symbol for entropy is e. entropy is a measure of the energy dispersal of a system. the greater the freedom of motion of particles in a system, the greater the entropy of the system. any process that causes an increase in the entropy of a system will be spontaneous. entropy is another term for kinetic energy or energy of movement.

Answers

The options which correctly describe entropy are- Entropy is a measure of the energy dispersal of a system, The greater the freedom of motion of particles in a system, the greater the entropy of the system and Any process that causes an increase in the entropy of a system will be spontaneous.

What is the definition of entropy?

Entropy is a measure of the disorder or randomness of a system, and it is often associated with the amount of energy that is unavailable to do work. The symbol for entropy is S. It is not another term for kinetic energy or energy of movement.

What is the second law of thermodynamics?

The second law of thermodynamics says that the total entropy of a system either increases or will remain constant in any spontaneous process. It never decreases.

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which compound can provide the energy for chemosynthesis?(1 point) responses water water hydrogen sulfide hydrogen sulfide carbon dioxide carbon dioxide oxygen

Answers

The compound can provide the energy for chemosynthesis is the carbon dioxide.

The Chemosynthesis is the process in which the certain microbes will create the energy by mediating the chemical reactions. so that  the animals that live around the hydrothermal vents will make their living from the chemicals that are coming out of the seafloor. The energy stored in the bundles or the packets is known as the photon. The compound can provide the energy for chemosynthesis is the carbon dioxide and the photons.

Thus, The compound carbon dioxide can provide the energy for chemosynthesis. Therefore the correct , option C is correct.

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the density of gold is 19.3 g/ml. what is the volume of a gold nugget that weighs 67.0 g? write your numerical answer without unit inside the box. the answer should be in three significant figures and in standard not scientific notation.

Answers

The volume of a gold nugget that weighs 67.0 g is 3.47 mL

The relationship between an object's mass and the volume it occupies is known as its density. This means that if an object's volume increases but its mass remains constant, its density will decrease.

We use the equation: to determine the mass of the solution.

ρ = m/V

whre,

ρ = density

m= mass

v= volume

so,

V= m/ρ

We receive:

Gold mass =67.0 grams.

Gold has a density of 19.3 g/mL.

Using the values in the equation above, we obtain:

V= m/ρ

V = 67.0 grams./ 19.3 g/mL.

V= 3.47 mL

Consequently, the gold nugget's volume is 3.47 mL

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A body is accelerated continuously. What is the form of the graph?
A. cubic
B. inverse
C. linear
D. quadratic

Answers

Answer:

B: Inverse

Explanation:

The answer is B. inverse

which chemical pathway appears to be important both in some types of psychotic behavior and in the reinforcing properties of various drugs?

Answers

The chemical pathway appears to be important both in some types of psychotic behavior and in the reinforcing properties of various drugs is  Mesolimbic dopamine pathway.

The reinforcing and addictive qualities of substances like nicotine are greatly influenced by the mesolimbic dopamine system.

Dopamine serves a variety of functions and is both a neurotransmitter and a hormone.

These mesolimbic pathways aid in the distribution of dopamine throughout the body. The nucleus accumbens receives dopamine from the ventral tegmental region via the mesolimbic dopamine pathways.

Dopamine produces a sense of reward and pleasure in the nucleus accumbens.

Dopamine flows from the ventral tegmental region to the nucleus accumbens anytime there is a sense of rewarding or pleasurable stimuli. Dopamine provides a sense of positive feeling, which leads to addictive behavior ( ie, drugs).

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a fictitious element z has an average atomic mass of 223.13 u. element z has two naturally occuring isotopes. the more abundant isotope has an exact mass of 224.75 u and a relative abundance of 62.94%. calculate the exact mass of the second isotope.

Answers

The exact mass of the second isotope is  224.15 u

The following equation can be used to get the average atomic mass:

average atomic mass = (% of the first isotope/100) x mass of the first isotope+  (% of the second  isotope/100) x mass of the second isotope)

Due to this:

Initially isotope:

% = 62.94 %

Mass = 224.75 u

The second isotope is:

Since there are only two isotopes of the element, the second percentage is equal to 100 minus the first percentage.

% = 100 % - 62.94 % = 37.06 %

Assume Mass = x u.

Average Mass = 223.13 u, as stated

Thus,

average atomic mass = (% of the first isotope/100) x mass of the first isotope+  (% of the second  isotope/100) x mass of the second isotope)

223.13 = (62.94 % x 224.75) +( 37.06 % x 223.13 )

                   100                         100

When we solve for x, we obtain:

x = 224.15 u

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what is the entropy of this collection of training examples with respect to the target function classification?

Answers

Deciding whether or not to approve a mortgage Future changes in consumer purchase tendencies can be predicted using classification models.

A mortgage is a kind of loan used to buy or keep up real estate, such as a home, piece of land, or other construction. The borrower agrees to make a series of monthly payments, divided into principal and interest, to the mortgage lender. This frequently emerges as a succession of regular, weekly episodes. After then, the asset is forfeited as loan collateral.

Borrowers are need to fill out an application with their selected lender and fulfill a number of criteria, such as down payments and minimum credit scores. Before going on to the closing stage, mortgage applications must pass a stringent underwriting procedure.

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Follow-Up:
1. Rate is a ratio of two different kinds of measurements. Speed, for example, is a rate that depends on
the value of both distance and time. Rates, such as speed, are typically calculated by dividing one
measurement by another. Rates do not have to be related to speed. Another example of a rate
would be the price per dozen for the cost of eggs. What are at least two other examples of rates?
Describe the two measurements needed to determine those rates.

Answers

Feet and inches are the measurements needed

the rate constant for a reaction at 40.0oc is exactly three times that at 20.0oc. calculate the activation energy for the reaction. report your answer in kj/mol.

Answers

The activation energy for the reaction is 4.187 x 10⁴ J/mol.

The reaction's starting point temperature is 40.0° C

T' = 20.0° C is the reaction's final temperature.

Initial temperature's rate constant is three times higher than final temperature's.

The relationship between the Arrhenius energy and the rate constant is the basis of the presented problem. And the mathematical expression is as follows:

ln k'/k = (Eₐ/R) x (1/T-1/T')

The universal gas constant, R, is used here. And is the activation's Arrhenius energy.

As stated in the issue,

K'/k = 3

Solving as,

ln k'/k = (Eₐ/R) x (1/T-1/T')

ln 3 = (Eₐ/8.134) x (1/293-1/313)

1.098 =  (Eₐ/8.134) x2.18 x10⁻⁴

Eₐ = 4.187x 10⁻⁴ J

Thus, it follows that the required amount of activation energy for the specified reaction is 4.187x 10⁻⁴ J.

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an empty container with a volume of 160.0 cm3 is weighed and found to have a mass of 72.3 g. the container is filled with a liquid and reweighed. the mass of the container and the liquid is 199.9 g. what is the density of the liquid to the appropriate number of significant figures?

Answers

An empty container with a volume of 160.0 cm³ is weighed and found to have a mass of 72.3 g. The density of the liquid is 0.797 g/ cm³.

The Mass of empty container = 72.3 g

The Mass of container + Liquid = 199.9 g

The Mass of Liquid =?

The Mass of Liquid = (Mass of container + Liquid) – (Mass of the empty                

                                                                                          container)

The Mass of Liquid = 199.9 - 72.3

The Mass of Liquid = 127.6 g

The volume = 160 cm³

The density is given as:

Density = mass / volume

Density = 127.6 / 160

Density = 0.797 g/cm³

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Which two changes would decrease the gravitational force between two objects?

Answers

Decreasing mass and increasing distance between two objects decrease the gravitational force between two objects.

What is gravitational force?

The concept of gravitational force is described by Newton's Law of Universal Gravitation. This gravitational force is indeed a form of non-contact force; it is a constant attracting and constrictive force in nature.

The attraction force felt by two or even more objects into contact is known as gravitational force. The Gravitational Force Formula, which was derived from Newton's Universal Law of Gravitation, is used to calculate the gravitational force.

F=GmM/r²

From formula we can see that decreasing mass and increasing distance between two objects decrease the gravitational force between two objects.

Therefore, decreasing mass and increasing distance between two objects decrease the gravitational force between two objects.

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calculate the molarity of a solution by dissolving 10.0 g of al(no 3 )3 in enough water to make 250.0 ml of solution.

Answers

The molarity of the solution by dissolving the 10.0 g of Al(NO₃)₃ in the enough water to make 250.0 ml of solution is 0.184 M.

The mass of the  Al(NO₃)₃ = 10 g

The molar mass of Al(NO₃)₃ = 212.9 g/mol

The number of moles = mass / molar mass

                                     = 10 / 212.9

                                     = 0.046 mol

The volume of the solution = 250 mL = 0.250 L

The molarity expression is :

Molarity = moles / volumes in L

Molarity = 0.046 / 0.250

Molarity = 0.184 M

Thus, the molarity of the Al(NO₃)₃ solution is 0.184 M  with the volume of  the 250 mL.

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4NH3 +5O2→4NO+6H2O (Run at constant temperature and pressure)

If 3.20 liters of ammonia gas are reacted, how many liters of oxygen gas are consumed?

a
3.20 L O2

b
4.00 L O2

c
2.56 L O2

Answers

If 3.20 liters of ammonia gas reacts, the amount of oxygen gas that will be consumed is 4L of oxygen gas (option B).

How to calculate volume using stoichiometry?

Stoichiometry refers to the quantitative relationship between the reactants and products of a specific reaction or equation.

According to this question, ammonia gas reacts with oxygen gas to produce nitrogen oxide and water as follows:

4NH₃ + 5O₂ → 4NO + 6H₂O

Based on the above equation, 4 moles of ammonia gas reacts with 5 moles of oxygen gas.

This means that 3.2 litres of ammonia gas will react with 3.2 × 5/4 = 4 litres of oxygen gas.

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How much change in temperature would the addition of 39,231J of heat have on a 532g sample of copper?

Answers

54 would be your answer so letter j

which bonds are covalent bonds? question 19 options: a) peptide bonds b) glycosidic bonds c) phosphodiester bonds d) all of these choices are correct.

Answers

Peptide bonds, glycosidic bonds, phosphodiester  bonds are covalent bonds.

A covalent bond is formed by the equal sharing of electrons by two atoms.

The bond which is  formed between the first carbon atom of one monosaccharide with the four carbon atoms present in the neighboring monosaccharide unit and, which results in the formation of a polysaccharide unit is known as a Glycosidic bond.  In the formation of this bond, a water molecule is released as a by-product.

A covalent bond which is formed between the carboxyl group of one amino acid and the amino group of the neighboring amino acids, is known as a peptide bond. This bond formation involves release of a water molecule as a by-product.

The phosphate-hydroxyl linkage present between two nucleotides where the phosphate group is attached to the hydroxyl group(OH) at the 5'-carbon of pentose sugar is bonded to the hydroxyl group of the 3'-carbon of the pentose sugar present in the next neighboring nucleotide. This bond  is known as a phosphodiester bond.

Thus, option (d) is correct

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Three magnesium isotopes have atomic masses and relative abundances of 23.995 amu (78.99%), 24.986 amu (10.00%), and 25.992 (11.01%). Calculate the average atomic mass of magnesium.
i’ll give brainliest

Answers

You would multiple the percentages times the atomic mass and then add each of them together.

Ex. (23.995)(.7899)+(24.986)(.10)+(25.992)(.1101). = 24.3139 amu

Answer:

24.3139697

Explanation:

23.995(0.7899)+24.986(0.1000)+25.992(0.1101) = 24.3139697

In the compound, A is the ___, B is the ____, C is the ___.
Multiple choices:
-Hydrate
-Anhydrate
-Waters of hydration

Answers

The highlighted parts of the compound are;

A - Anhydrate

B - Waters of hydration

C - Hydrate

What is a hydrated compound?

We know that a compound can be said to be hydrated if the compound does contain a water of crystallization. The implication of this is that If we have a compound that has a certain specified number of water molecules attached to it, we can say that the compound is hydrated.

The anhydrous compound is the compound that has lost its water of crystallization. We can tell that for the compound that we have, there is a water of hydration attached.

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methyl isocyanate reacts with strong acids, such as sulfuric acid, to form a cation. for protonation on , which resonance contributor is most important?

Answers

The resonance contributor that is most important for protonation in methyl isocyanate is the one in which the nitrogen atom is double-bonded to the carbon atom, and has a formal positive charge, this is called a carbocation or a carbenium ion.

This resonance contributor is considered the most important because it shows the nitrogen atom with the greatest electron density, making it more susceptible to protonation.

In the reaction of methyl isocyanate with strong acids, such as sulfuric acid, the protonation occurs on the nitrogen atom of the molecule. The protonation process is determined by the relative acidity of the nitrogen atom and its electron-withdrawing groups, and thus the resonance contributor that is most important for the protonation is the one that shows the nitrogen atom with the greatest electron density.

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a separation process that depends on differing abilities of substances to form gases is called .

Answers

A separation process that depends on differing abilities of substances to form gases is called Distillation.

Distillation is a common method used to separate and purify liquids based on their different boiling points. The process involves heating a mixture of liquids to a temperature where one liquid will evaporate and form a vapor, while the other liquids will remain in a liquid state. The vapor is then condensed back into a liquid form and collected, which is then called the distillate. The distillate will be the liquid with the lowest boiling point of all the components in the mixture. This process can be repeated for different boiling point ranges and those multiple distillates will be different components of the original mixture.

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identify tools that are ideal for cleaning glassware.

Answers

tools that are ideal for cleaning glassware Brushes and  Detergent

Scrub the interior of curved glassware with warm tap water and a brush dipped in soapy water. You can flush the sink with this waste water. To avoid severe water stains, detergents, remove soap suds with deionized water. Pouring the DI water rinse through clean glassware should result in a smooth sheet. According to the University of Wisconsin Office of Chemical Safety, acid solutions such fuming sulfuric acid, diluted sulfuric acid, chromic acid solution, piranha solution, and aqua regia (a blend of nitric acid and hydrochloric acid) are used to clean laboratory glassware.

identify tools that are ideal for cleaning glassware.

1. reusable clothes

2.brushes

3. detergents

4. steel wool water

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Other Questions
Which dog is demonstrating stimulus discrimination in the following scenarios?A. Chug, a fearful dog after growing up without a home, gradually became more trusting of people after being exposed to them. Then, Chug suddenly returns to his fearful behavior.B. Sparky recognizes the sound of the can opener and excitedly goes to his bowl when he hears it.C. Cookie cowers when she hears the pop of fireworks, but not when she hears the pop of lightning.D. Brodie associates the sound of the doorbell with guests and excitedly goes to the door when he hears it, but he also does so when he hears a game show contestant ring a bell to answer a question.E. Princess used to sit on command, but since her owner stopped giving her a treat for it, she no longer does. Determine the number of classes in the frequency table below.Class | Frequency23-24 , 725-26 , 227-28 , 629-30 , 431-32 , 1 within a study, the factor that does not change is the: please choose the correct answer from the following choices, and then select the submit answer button. Analyze the given diagram of the carbon cycle.An image of carbon cycle is shown. The sun, a cloud, two trees, one towards left and the other towards right, an animal, lake, and a factory are included. Arrow A points from the sun to the left tree. Arrow B points from the air above the clouds to the left tree. Arrow C points from the factory towards the air above the clouds. Arrow D points from the air to the lake labeled Carbonates in Water. Arrow E points from the label Dead Organism under the animal to label Fossils and Fossil Fuels. Arrow F points from the right tree to the air.Part 1: Which process does arrow A represent?Part 2: Which type of energy transformation does arrow A represent?Part 3: Justify why this process is a recycling of carbon in the carbon cycle.Use complete sentences to explain your answer. The coal companies, in response, recruited workers from as far as New Yorks Ellis Island, where newly arriving immigrants were desperate for jobs.What is the denotation of the word desperate?in need ofexcited aboutoverlooked forinterested in Andy is using wooden boards that are 0. 45 feet wide to build a deck. How many rows of boards are needed to completely cover a space that is 21 feet wide? 2. 4 A stellar atmosphere consists almost entirely of hydrogen. Assume that 50% of the hydrogen molecules are dissociated into atoms and that the pressure is 100 Pa. Given that the binding energy of the hydrogen molecule is 4. 48 eV, estimate the temperature Using 18 O as the basis of your discussion, explain how we know that the oxygen released in photosynthesis comes from water. help plsssssssssssssss Select all the correct images.Select the atoms that belong to the same element.16 protons 16 neutrons14 protons 14neutrons16 electrons11 protons 10 neutrons13 protons 14 neutrons 13 electrons14electrons11protons12 neutrons11 electrons11electrons Determine the concentration of the sodium hydroxide solutions after being exposed toair at different time intervals (1, 2, 3, 4 and 5 days).( your answer need to be to 3decimal places ) show your work What number after being increased by 22% results in a value of 305 round your answer to the nearest hundredth if necessary Consider two different implementations of the same instruction set architecture. The instructions can be divided into four classes according to their CPI (class A, B, C, and D). P1 with a clock rate of 2. 5 GHz and CPIs of 1, 2, 3, and 3, and P2 with a clock rate of 3 GHz and CPIs of 2, 2, 2, and 2. Processor Class A Class B Class C Class D P1 3 2 1 4 P2 2 2 2 2 Given a program with a dynamic instruction count of 1. 0E6 instructions divided into classes as follows: 10% class A, 20% class B, 50% class C, and 20% class D. a. Which implementation in faster? b. What is the global CPI for each implementation? c. Find the clock cycles required in both cases? find the inverse of 8x^5+7 define each of the following as atomic element, molecular element, ionic compound, or molecular compound. h2s [ select ] xe [ select ] br2 [ select ] cacl2 [ select ] i2 [ select ] al2s3 [ select ] pb [ select ] no2 the medical assistant in the back-office processes chemical testing of urine and it tests positive for protein in the urine, also known as: MP Attend to Precision Denise needs 4 pounds of soilto fill a flowerpot. She has a bag with 2 pounds of soiland a box with 13 pounds of soil. Does Denise have enoughsoil to fill the flowerpot? Explain. An ordinary (fair) die is a cube with the numbers 1 through 6 on the sides (represented by painted spots). Imagine that such a die is rolled twice in successionand that the face values of the two rolls are added together. This sum is recorded as the outcome of a single trial of a random experiment.Compute the probability of each of the following events.Event A: The sum is greater than 9.Event B: The sum is not divisible by 2 and not divisible by 5.Round your answers to two decimal places.(a) P(A) = 11.1(b) P (B) = how long does it take for a serious burn to occur when the temperature of a liquid is 140 f degrees? modern network traffic monitoring devices, such as fireeye and palo alto, provide a higher level of security and detection than common firewalls and ids/ipss. describe how these devices function. do they really offer the level of protection that they claim? would you recommend them to a client? why or why not?