50 POINTS PLEASE HELP

2.How many atoms are in 3.35 moles of Aluminum?

3.How many moles of CO2 gas are in a 101.25 L container filled with CO2 gas?

4.What is the mass of 13.7 moles of N2 gas?

Answers

Answer 1

Answer:

2) To find the atoms from the moles, you just multiply Avogadro's number (6.02 x 10^23) by the moles.

So 3.35 x (6.02 x 10^23) = 2.0167 x 10^24 atoms are in 3.35 moles of aluminum

3) If the question is asking under standard temperature and pressure, we know that if we divide the volume by the molar volume of a gas (which is 22.7 in standard temperature and pressure), we can get the moles.  

So 101.25L / 22.7 = 4.46 mol

4) We know that to find the moles, it is the mass divided by the molar mass. If we rearrange the equation to solve for mass, we have to multiply the moles by the molar mass to get there.

Nitrogen's (N) molar mass on the periodic table is 14g/mol, but since Nitrogen is a diatomic element, it would be N2 by itself. So multiply 14 by 2, which will give you 28g/mol. N2's molar mass is 28g/mol.

Now you multiply 13.7 moles by 28g/mol, which will give you 383.6g

Just did a few edits here, 4.46 for question 3 is in moles not L

Answer 2

Taking into account the definition of avogadro's number,

2. 3.35 moles of aluminum contains 2.018ײ⁴ atoms.

3. 4.52 moles of CO₂ gas are in a 101.25 L container filled with CO₂ gas.

4. 13.7 moles of N₂ contain 383.6 grams.  

2. How many atoms are in 3.35 moles of Aluminum?

Avogadro's Number is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

Then you can apply the following rule of three: if 1 mole of aluminum contains 6.023×10²³ atoms, then 3.35 moles of aluminum contains how many atoms?

amount of atoms of aluminum= (6.023×10²³ atoms × 3.35 moles)÷ 1 mole

amount of atoms of aluminum=2.018ײ⁴ atoms

Finally, 3.35 moles of aluminum contains 2.018ײ⁴ atoms.

3.How many moles of CO₂ gas are in a 101.25 L container filled with CO₂ gas?

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

Then, you can apply the following rule of three: If by definition of the STP conditions 1 mole of CO₂ occupies a volume of 22.4 L, how many moles does 101.25 L occupy?

[tex]amount of moles of CO_{2} =\frac{101.25 Lx1 mole of CO_{2} }{22.4 L}[/tex]

amount of moles of CO₂= 4.52 moles

4.52 moles of CO₂ gas are in a 101.25 L container filled with CO₂ gas.

4. What is the mass of 13.7 moles of N₂ gas?

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

In this case, the molar mass of N₂ is 28 g/mole. So, you can apply the following rule of three:  If 1 mole of N₂ contains 28 grams, 13.7 moles of N₂ contain how much mass?

[tex]mass=\frac{13.7 moles x28 grams}{1 mole}[/tex]

mass= 383.6 grams

13.7 moles of N₂ contain 383.6 grams.

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Avogadro's Number: brainly.com/question/11907018?referrer=searchResults brainly.com/question/1445383?referrer=searchResults brainly.com/question/1528951?referrer=searchResultsSTP conditions:brainly.com/question/3773297?referrer=searchResults brainly.com/question/9901446?referrer=searchResults brainly.com/question/12695086?referrer=searchResults brainly.com/question/15507610?referrer=searchResults brainly.com/question/14260169?referrer=searchResults brainly.com/question/14831640?referrer=searchResultsmolar mass:https://brainly.com/question/1145279

Related Questions

Which statement describes how a substance melts?(1 point) Molecules in the substance gain kinetic energy and then become less tightly bound to each other. Molecules in the substance gain kinetic energy and then become less tightly bound to each other. Molecules in the substance lose kinetic energy and then become more tightly bound to each other. Molecules in the substance lose kinetic energy and then become more tightly bound to each other. Molecules in the substance lose kinetic energy and then become less tightly bound to each other. Molecules in the substance lose kinetic energy and then become less tightly bound to each other. Molecules in the substance gain kinetic energy and then become more tightly bound to each other. Molecules in the substance gain kinetic energy and then become more tightly bound to each other.

Answers

Answer:

Molecules in the substance gain kinetic energy and then become less tightly bound to each other.

Explanation:

According to the forces of attraction , for a substance to melt molecules  in the substance gain kinetic energy and then become less tightly bound to each other.

What are forces of attraction?

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different  states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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Given the equation
N2(g) +3H2 (g)--> 2NH3 (g)
1 mole of N2 gas is needed to completely react with 3 moles of H2 gas.
How many molecules of H2 gas are needed?

Answers

Answer:

1.81 x [tex]10^{24}[/tex] molecules H2

Explanation:

Use Avogadro's number:

3 moles H2 x 6.022 x [tex]10^{23}[/tex] molecules= 1.81 x [tex]10^{24}[/tex] molecules H2

Use the chemical equation to complete the activity.

4Fe + 3O2 → 2Fe2O3

Iron (Fe) reacts with oxygen (O2) to form iron oxide. A scientist adds 15.4 grams of Fe to 3.6 grams of O2 to start the reaction. All of the iron and oxygen react to form iron oxide. Explain in detail how you can determine how many grams of iron oxide will be produced.

Use the law of conservation of matter in the explanation.

Answers

Answer:

14.54 g Fe2O3

Explanation:

The first step would be to balance the equation but since it's already balanced we don't have to worry about that.

Through the balanced equation, you can find the stoichiometry of the reaction, that is:

4 moles of Fe, react with 3 moles of O2, to produce 2 moles of Fe2O3

Chemistry (accurately stoichiometry) is all about ratios and proportions. The balanced equations gives you the standard ratio by which moles are produced.

So the next step (shown in the paper), is to convert the grams that are giving you in Moles, and you do this by dividing the number of grams given by the molar mass of the substance. The molar mass is the number of grams by which you can find exactly 6.022x10²³ molecules (one mole) of one specific substance.

15.4 g of Fe= 0.28 mol Fe

3.6 g of O2= 0.11 mol O2

Now that you have the quantity of moles, what you need to do is to look for the limitant reactant.

In a balanced equation, the number of moles in the reactants are the rules and they're gonna react completely with each other. If you want x quatity of reactants to react completely, then you will have to respect the proportion to the ratio given in the balanced equation.

But you will rarely follow the proportion so there will usually be a reactant that's gonna be limiting the reaction and one that is in excess. And how do you find this? Well, the easiest way to do it is:

Dividing the number of moles obtained by x element the coefficients of that element in the balanced equation. The one that has the smallest ratio, is the limitant reactants.

Since the limitant reactant is gonna be limiting the reaction, all the stoichiometric procedures should be calculated through it, and in this case, the limitant reactant is O2.

But then how to establish the stoichiometric rule to find the number of Iron oxide (III) that's being produced?

Look back to the stoichiometry of the reaction:

To produce 2 moles of Fe2O3, you need 3 moles of O2.

But you have 0.11 mol O2.

Then establish a factor of conversion (shown in the picture)

The result is 0.07 mol of Fe2O3, but you need the answer in grams so you find the molar mass of Fe2O3 and then multiply it by the number of moles (0.07)

The answer is 14.54 g of Fe2O3

CHEMISTRY IS ALL ABOUT PROPORTIONS :D

2NaOH(aq) + Cl2(g) -> NaCl(aq) + NaClO(aq) + H20(l)

Answers

Answer:

Cl2(g) + 2 NaOH(aq) = NaCl(aq) + NaClO(aq) + H2O(l)  

Explanation:

why don't elements in a group have consicutive atomic numbers?​

Answers

Answer:

Periods have consecutive atomic number as they are in a row and groups are vertical meaning they are in a column and groups have similar properties

elements in a period have consecutive atomic numbers. Groups have same properties and not consecutive atomic numbers.

Methane has the chemical formula of CH4 and would, therefore, it would be
considered...

Answers

Answer:

compound

Explanation:

A compound contains more than one element.

Methane's chemical formula (CH4) indicates that it consists of one carbon atom and four hydrogen atoms.

Therefore, methane is a compound.

Is the third, because compound are a thing that is composed of two or more separate elements; a mixture.

Consider the following reaction:
Mg + 2H2O Mg(OH)2 + H2 ΔH = -353 kJ

This reaction is
A.
exothermic because heat is released.
B.
endothermic because heat is released.
C.
endothermic because heat is absorbed.
D.
exothermic because heat is absorbed.

Answers

Answer:

A

Explanation:

I think it's the answer

How many moles of water is 5.02x1018 molecules
of water?

Answers

Answer:8.334×10^-6 moles

Explanation:

a mole is 6.023×10^23

5.02×10^18 ÷ 6.023×10^23=8.33×10^-6

a magnesium ion has 12 protons and a charge of 2 . how many electrons does it contain?

Answers

Answer:

It contains 12 electrons.

when a tennis ball is dropped from a high distance is it elastic or inelastic collision? explain?

Answers

Answer:

An elastic collision.

Explanation:

When a ball is dropped to the ground, one of four things may happen: It may rebound with exactly the same speed as the speed at which it hit the ground. This is an elastic collision.

Find the molar mass of iron (III) nitrate, Fe(NO3)3

Answers

Answer:

Hey there are you doing are you doing I will tell you the answer

Where are nonmetals located in the periodic table?



Question 8 options:

along the upper left side

in the middle

along the upper right side

along the bottom

Answers

Answer: They are located along the upper right side of the periodic table.

Explanation: Malleability is a physical property that some elements of matter have that can be broken down into sheets to give them a certain shape without breaking. This physical property belongs to plasticity. It is a characteristic that some metals have, sheets of said metal can be obtained. The heat needs to be increased, some examples are gold, platinum, zinc, tin, etc.

Which of the following elements are most likely to form an ionic bond
K and Ca

S and Cl

K and Cl

C and O

Answers

Answer:

K (Potassium) and Cl (Chlorine)

Explanation:

Ionic bonds are formed with metals and nonmetals

Covalent bonds are formed only with nonmetals

Calcium and potassium are both metals

Sulfur and Chlorine are both nonmetals so they don't form ionic bonds

Carbon and Oxygen are both nonmetals so they don't form ionic bonds

is change in color a physical change

Answers

Answer: A change in color is not always a chemical change. If one were to change the color of a substance in a non-chemical reaction scenario, such as painting a car, the change is physical and not chemical.

Solid → Liquid: Melting

Solid → Gas: Sublimation

Liquid → Gas: Vaporization

Gas → Liquid: Condensation

Explanation:

which type of bonding is found in all substances made up of molecules?

Answers

Answer:

Chemical bonds

Explanation:

Chemical bonds are forces that hold atoms together to make compounds or molecules. Chemical bonds include covalent, polar covalent, and ionic bonds. Atoms with relatively similar electronegativities share electrons between them and are connected by covalent bonds.

giving brainliest, more chemistry questions being uploaded

Answers

Answer:

We have the atoms, and we have the molar mass of Vanadium (listed in the periodic table) which should be 50.94g/mol.

The first step is to convert the 4.18 x 10^23 atoms into moles by dividing the atoms by Avogadro's number (6.02 x 10^23)  

(4.18 x 10^23)/(6.02 x 10^23) = 0.694 moles

Now we know that moles is equal to the mass divided by the molar mass. So now that we have the moles and the molar mass of Vanadium, we can rearrange the equation to find mass. Once you have rearranged it, you have to multiply the moles by the molar mass.

So 0.694 moles x 50.94g/mol = 35.35g of V

how many grams are in 4.5 x 10^22 molecules of water

Answers

Answer:

1.35 g

Explanation:

water is h2o, so the molar mass is 1.01x2+16.00=18.02. divide 4.5 x 10^22 by 6.022 x 10^23 to get 7.5 x 10^-2 (2 sig figs). 18.02 x 7.5 x 10^-2 is 1.35 g

PLEASEEE HELPPPPPPPPPPPPPPPPPP

Answers

It’s 160.325 grams of mol sulfur! Hope this helped :)

explain a mixture of molecules

Answers

Answer:

A mixture of molecules is a group of molecules in which there are multiple different elements and atoms, that are in either fixed proportions or random. There are heterogeneous and homogenous mixtures.

Explanation:

Use this oxidation-reduction reaction to answer questions about half-reactions:
Upper m g plus 2 upper H upper C l right arrow upper M g upper C l subscript 2 plus upper H subscript 2.
Classify these half-reactions by typing in “O” for “oxidation half-reaction,” “R” for “reduction half- reaction,” and “N” for “neither.”

Answers

Answer:

For those who need it, the answers are N, O, R

Explanation:

To solve such this we must know the concept of redox reaction. Therefore, the given reaction is an oxidation and reduction reaction. The oxidation reaction is Mg [tex]\rightarrow[/tex] MgCl[tex]_2[/tex] and reduction reaction is HCl [tex]\rightarrow[/tex]  H[tex]_2[/tex] .

What is chemical reaction?

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

Redox reaction is a chemical reaction where oxidation and reduction takes place simultaneously. Oxidation is loss of electrons and reduction is gain of electrons. The electron transfer from oxidant to reductant.

Mg + 2HCl [tex]\rightarrow[/tex] MgCl[tex]_2[/tex] + H[tex]_2[/tex]

Mg [tex]\rightarrow[/tex] MgCl[tex]_2[/tex] O

HCl [tex]\rightarrow[/tex]  H[tex]_2[/tex]      R

Therefore, the given reaction is an oxidation and reduction reaction.

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If a sample of gas at constant temperature has its pressure doubled, what will happen to its volume?

Answers

Answer:

it'll halve

Explanation:

the gas is compressed with twice the pressure. The volume will be halved.

im certain

Look at the graph. Which part of the line shows a time
when the object was not moving?

Answers

B.

For the period of B, the line didn’t go up or down, it stayed still.
this shows that time was still passing but the car didn’t move.

PLS HELP

Answer this question and I will mark you the braninliest! <3

Answers

Answer:

the left one

Explanation:

heavier means it goes faster

Read this sentence from Chapter One of Jack London’s The Call of the Wild.

Buck rushed at the splintering wood, sinking his teeth into it, surging and wrestling with it. Wherever the hatchet fell on the outside, he was there on the inside, snarling and growling, as furiously anxious to get out as the man in the red sweater was calmly intent on getting him out.

What is a good prediction question to ask after reading this excerpt?

Answers

Answer:

b)

Explanation:

It shows the natrual proggresion of a story and helps blend the narrtive together.

Answer:B

Explanation: i took the quiz on edge

BRAINLIEST TO FIRST RIGHT ANSWER

Use the key above to interpret the following incomplete chemical reaction.

Select the statements at apply in order to complete the model. (Choose 3)

A) The number of atoms in the products must be equal to the reactants.

B) One diatomic oxygen should be removed from the reactant side.

C) One unbonded carbon atom should be added to the product side of the equation

D) One carbon atom and two oxygen atoms are needed to balance the equation.

E) One carbon dioxide molecule should be added to the product side of the equation.​

Answers

Answer:

Carbon dioxide molecule

Answer:a , d ,e

Explanation:

jusy took quiz

what species has an atom with an oxidation number of 3

Answers

So we found out that chlorine had an overall oxidation number of plus three, and that's it for this one.

Two gas jars are connected to each other, but they are separated by a closed valve. One gas jar contains oxygen, and the other contains hydrogen. What will happen when the valve is opened?

Answer Choices:

A. Oxygen and hydrogen molecules will mix because of random movement of their molecules.
B. Oxygen and hydrogen molecules will remain in separate jars because of different partial pressures.
C. Oxygen and hydrogen molecules will remain in separate jars because of different rates of expansion.
D. Oxygen and hydrogen molecules will mix because the molecules have a much lower volume than the volume of the jars.

Answers

When the valve is opened, oxygen and hydrogen molecules will mix because of random movement of their molecules.

What is diffusion?

Diffusion involves the movement of gas molecules from one region where they are in higher concentration to another region where they are in lower concentration.

When the valve is opened, oxygen and hydrogen molecules will mix because of random movement of their molecules.

Learn more about diffusion: https://brainly.com/question/576417

Answer:

Oxygen and hydrogen molecules will mix because of random movement of their molecules.

Explanation:

Some acids like acetic acid and tartaric acid cannot be tasted
TRUE OR FALSE

Answers

The statement is a false.

An acid is a substance which when dissolved in water, produces hydroxonium ion, as the only positive ion.

Some properties of acid include:

They have sour tastes and

Strong acids are corrosive.

There are two types of acids which includes:

Strong acids: These are the acids that ionizes completely in solution.

Weak acid: These are the acids that ionizes incompletely in solution.

Examples of weak acid is acetic acid and tartaric acid.

They can be used as food substances like vinegar and naturally occurs on fruit like banana or grape.

Therefore, weak acids such as acetic acid and tartaric acid can be tasted.

Learn more about weak acids here:

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The given statement is False.

Some acids like acetic acid and tartaric acid can be tasted.

Organic acids, such as acetic, citric, malic, and fumaric acids in fruits and vegetables, and tartaric acid in wine, contribute significantly to the sour flavor of foods and beverages. Many inorganic acids taste sour in dilute solutions.

Tartaric acid is fairly water soluble and has a pronounced tart flavor. Tartaric acid is present naturally in grapes and bananas and has been shown to improve the flavor of grape and lime-flavored beverages. Tartaric acid may aid in the treatment of glucose intolerance and digestion.

Acetic acid is a colorless liquid having a sour flavor. Although it is most frequently associated with vinegar, this acid has a wide range of different applications in a variety of industries. Acetic acid is a colorless liquid that is composed of chemical compounds.

To know more about Acetic acid,

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Sodium has more valence electrons than magnesium.

True
False
Correct answers only please, no links. (15 points)

Answers

Answer:

False

Explanation:

hi! sodium has one valence electron while magnesium has 2. this is because of their position on the periodic table. sodium is the first in the row, meaning it has one valence electron. magnesium is next to sodium on the periodic table, meaning it is second in the row and has two valence electrons. hope this helps!

calculate the number of atoms in a sample containing 3.5 g of silicon atoms

Answers

Answer:

there are 7. 505 x 1022 atoms in 3.5 grams of silicon.

Explanation:

So, 1 mole of silicon will have a mass of 28.0855 g and the number of atoms will be 6.022 x 1023. Therefore, there are 7. 505 x 1022 atoms in 3.5 grams of silicon.

Answer:

1 mole of silicon will have a mass of 28.0855 g and the number of atoms will be 6.022*1023 . Therefore , there are 7.505*1022 atom in 3.5 g of silicon .

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