Answer:
His kinetic energy is converted into potential energy.
Explanation:
Make a atomic model of carbon-12 in mine craft
(If it's good I'll give a lot of points)
Here is the atomic model in the picture.
An element's atomic number represents
the number of protons found in that element
the number of protons and electrons found in that element
the number of protons and neutrons found in that element
the number of electrons found in that element
the second options
the number of protons and electrons found in that element
What is the theoretical amount of sodium citrate (Na3C6H5O7) produced if you react 85.0g of citric acid (H3C6H5O7) in excess amount sodium hydroxide? If you actually produced 97.3 g of sodium citrate what is the percent yield?
Answer:
i did not find the amswer sorry
ou dissolve a 2.50 g penny in 50.0 mL of HNO3. After reacting overnight, you dilute the blue solution to a volume of 100 ml. You test a sample of this solution, and find that it has an absorbance of 0.12 abs at 635 nm. i Calculate the concentration of Cu
This question is describing an spectrophotometry experiment in which the concentration of copper(II) ions has to be determined when 2.50 g of a copper-rich penny is reacted with 50.0 mL of nitric acid. In addition, the absorbance of a sample of the solution turned out to be 0.12 at 635 nm, so that the concentration was estimated as 12.8 g/L.
First of all, we must recall the Beer's law that can be written as follows:
[tex]A=ebC[/tex]
Whereas A is the absorbance of the sample, e the molar absorptivity, b the cuvette's path and C the concentration. However, this problem is not providing sufficient information to calculate the required concentration, however, similar absorbance experiments have graphed (absorbance vs concentration) calibration curves exhibiting trendlines as the one shown below:
[tex]y=0.009647x-0.003655[/tex]
Thus, since y stands for the absorbance and x for the concentration but in g/L not M (mol/L) for those experiments, we can set y equal to 0.12 so we solve for x as the concentration of the copper(II) ions in the sample:
[tex]y=0.009647x-0.003655\\\\x=\frac{0.12+0.003655}{0.009647}\\\\x=12.8g/L[/tex]
Nevertheless, it would be great if you come up with your own trendline, having clear the units for the absorbance vs concentration graph and thus double check your results because the data was not enough for the time being.
Learn more:
(Beer's law and trendlines) https://brainly.com/question/5093710(Spectrophotometry) https://brainly.com/question/14467788How do you out pizza the hut?
1. In a heterogeneous mixture, the substances
A. can be physically separated.
B. are chemically combined.
C. can only be separated through chemical
processes.
D. break down into new substances.
Please answer
What other scientific fields are
included in earth science?
I have experiment measuring sugar content with liquid what should can I say in future remarks I want three points please help
Answer:
Liquid sugar is the sugar you consume in liquid form from beverages like sugar sweetened soda. The sugar in beverages is often highly concentrated and easy to consume in large amounts without feeling full. Some examples of these drinks are fairly obvious, such as sodas and fruit punch.
Need ASAP will give brainlist
Answer:
A.
The answer is A :)
why do we need to study thermodynamics?
Why do we feel cold when we touch the iron?
A) Heat flows from iron to our body.
B) Heat flows from our body to iron.
C) Heat flows from iron to iron
D) Heat does not not flow
Please answer it soon as possible
Heat flows from our body to iron
I need the skeleton equation for the following sentence!
Carbon dioxide gas and solid calcium oxide are produced in the decomposition of solid calcium carbonate.
Answer:
A. CaCO(s)+SO(g)+O(g) --> CaSO(s)+CO(g)
A. CaCO(s)+SO(g)+O(g) --> CaSO(s)+CO(g)
1. Which of the following shows the process of freezing?'
A.candle wax cooling on the table
B.pouring cola over ice
C. heating a cup of water
D. particles are speeding-up and colliding more
Answer:
A. candle wax cooling on the table
Explanation:
Candle wax cooling on a table is an example of freezing because the atoms in the candle wax start to slow down as the wax cools. This is considered "freezing" because the slower an atom is vibrating then the colder it is and of course the faster an atom is vibrating then the hotter it is! :)
please help
write the correct IUPAC name for these componds
Answer:
A. 4,6-dimethyloct-1,4,6-yne
B. deconic acid
C. 3-ethyl-4-methyl-7-bromocyclohexene
D. 2,2,3-trimethyl-4-butyl-heptane
E. 3-methylhexane
F. ethyl hexanoate
G. butanal
H. propyne
J. 2,4-dimethyl-pent-2-ene
Explanation:
sorry i didn't have time to do I
I need HELP ASAP PLEASE!!!!!
Answer:
All answers given in the photo
_265Hs--->_16O+_9Be=_____?
Answer:
265hs+24.464536b+16o
Explanation:
265hs+16o+9b(2.718282)
=265hs+16o+24.464536b
=265hs+24.464536b+16o
1 gallon is how many mm
Answer:
0.133681 (cubic foot)
Explanation:
What is the name of the compound K3N
A chemical compound is a material made up of several types of molecules. Therefore, potassium Nitride is the name of the compound K[tex]_3[/tex]N.
What is chemical compound?A compound is indeed a substance that is composed of two or more separate chemical elements mixed in a defined ratio in chemistry. When the elements combine, they react and generate chemical connections that really are hard to break. These bonds occur as a result of atoms sharing or exchanging electrons.
A chemical compound is a material made up of several types of molecules (or molecular entities) that include atoms from much more than one chemical element and are bound together by chemical bonds. Potassium Nitride is the name of the compound K[tex]_3[/tex]N.
Therefore, potassium Nitride is the name of the compound K[tex]_3[/tex]N.
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Q5. A 1.35 m solution of NaCl in water is prepared. What is the mole fraction of
the NaOCI? 0.0237
Answer:
A solution contains 0.100 mol of NaCl dissolved in 8.60 mol of water.
The temperature went from 25 to 90 degrees Celsius. What is the CHANGE in temperature?
Answer:
+65 degress ?
Explanation:
I feel like there is more to this question
how many molecule are there in 24.0 L of oxygen gas at standard temperature and pressure
There are 6.44 × 10²³ molecules in 24.0 L of oxygen gas at standard temperature and pressure.
HOW TO CALCULATE NUMBER OF MOLECULES:
To calculate the number of molecules in a substance, we need the number of moles. The number of moles can be calculated using ideal gas law equation as follows:
PV = nRT
Where;
P = pressureV = volumen = number of molesT = temperatureR = gas law constantAccording to this question, oxygen gas is at standard temperature (273K) and pressure (1 atm)
1 × 24 = n × 0.0821 × 273
24 = 22.4n
n = 24 ÷ 22.4
n = 1.07moles
To calculate the number of molecules, we multiply the no. of moles by Avogadro's number (6.02 × 10²³)
no. of molecules = 1.07 × 6.02 × 10²³
no. of molecules = 6.44 × 10²³
Therefore, there are 6.44 × 10²³ molecules in 24.0 L of oxygen gas at standard temperature and pressure.
Learn more about how to calculate number of molecules at: https://brainly.com/question/19481036?referrer=searchResults
Which of the following is true about the mass of atoms?
А
An individual atom has no mass.
B
The atom of every element has a unique mass.
С
The mass of an atom increases with temperature,
D
The mass of an atom varies over time
Answer:
i think the answer is C , atom mass increases with temperature
How many liters are in a cubic meter? 100,000 100 10,000 1,000 10 NEXT QUESTION
Two substances both exhibit hydrogen bonding. Substance A has a boiling point of 78.4ºC. Substance B has a boiling point of 100ºC. Which statement correctly compares the substances?(1 point)
A) Substance A has stronger bonds, and it takes more energy to undergo a phase change.
B)Substance B has stronger bonds, and it takes more energy to undergo a phase change.
C) Substance B has stronger bonds, and it takes less energy to undergo a phase change.
D) Substance A has stronger bonds, and it takes less energy to undergo a phase change.
Answer:
The answer is C
Explanation:
Just took the test
Hydrogen bonding is the intermolecular interaction that occurs due to electronegativity differences. Substance B has stronger bonds and requires more energy. Thus, option B is correct.
What is hydrogen bonding?Hydrogen bonding is present in the water molecules that is because of the electronegativity differences and the dipole-dipole interaction. The hydrogen of the water molecule is bonded to the oxygen molecule.
The hydrogen bonding affects the boiling and the melting point of the substances as more energy are required to change the phase of the matter. So when substance B requires 100ºC than substance A (78.4ºC) it shows strong hydrogen bonding.
Therefore, option B. substance B has a strong hydrogen bond is correct.
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How many carbon atoms are in 11.2 ML of C3H6O
1 mL = 0.815 g
11.2 mL = X
X = 11.2 × 0.815
= 9.128 g
mole = 9.128/58
= 0.157 mole
1 mole = 6.02 × 10^23 atoms
0.157 mol = x
X = 0.157/1 × 6.02 × 10^23
= 9.451 × 10^22 atoms of C
please to recheck answers to ensure they are correct
I really hope this helps
3. Carbon dioxide gas lowers the amount of oxygen that enters the blood? True or false
Answer:
true
Explanation:
because carbon dioxide is dencer than oxygen therefore it displaces it
I need help with this question.
The London forces designated as A are much weaker than the dipole- dipole interaction designated as B.
The intermolecular forces are interactions that exists between molecules of a substance in a particular state of matter. The nature of intermolecular forces in a substance greatly affect the properties of the substance.
We can see that A represents weak London forces while B represents dipole - dipole interactions. The London forces are very much weaker than the dipole - dipole interactions.
Learn more intermolecular forces: https://brainly.com/question/17111432
why are electric switches and boards are made up of plastic
why are electric switches and boards are made up of plastic
Answer:-Because plastic is a poor conductor of electricity.
Explanation:-Plastics do not conduct enough heat and electricity. Therefore, it is used in the manufacture of plug switches, plug boards, etc.
What are three Possible overlaps that can occur during bond formation
Answer:
The Sigma (σ) Bond
S-S Overlapping. In this kind of overlapping, one 's' orbital from each participating atom undergoes head-on overlapping along the internuclear axis. ...
S-P Overlapping. ...
P-P overlapping.
The diagram shows two different methods for collecting the product of a reaction. Which setup would be better for collecting a soluble gas such as ammonia?
Answer:
The setup above is used to collect hydrogen gas
Both filtration and distillation are useful ,methods to purify or separate components of a mixture. To collect soluble gas such as ammonia the best method is distillation. Thus setup 2 is better for collection of solute.
What is distillation?Distillation is the process of separation of compounds using heat and condenser. The mixture is first boiled to the boiling point of solvent. When it is heated the solvent such as water passes from the beaker on which the mixture is taken.
The steam of the solvent is then cooled in the condenser tube and then liquid is collected to a second beaker. Therefore, the solute remains in the first beaker and can be collected.
Using filtration, we can only separate solution with insoluble solutes. Using filter paper the solid from the solution can be separated out.
First set up shows the filtration method which is not applicable for collecting soluble gas like ammonia. Therefore, the second setup that is distillation is better to collect soluble gases.
To find more about distillation, refer the link below:
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