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grigory [225]
3 years ago
5

What is the energy released or absorbed as heat when one mole of a compound is produced by combination of its elements? select o

ne:
a. heat of combustion
b. free energy
c. entropy
d. heat of formation?
Chemistry
1 answer:
suter [353]3 years ago
7 0
B and D is out. It cant be A because heat of combustion is substance not compound. So the answer is D.
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If temperature is increased , the number of collision per second
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Answer: increases

Explanation:

Increase in the temperature of a reaction system will cause the molecules of the reactants to possess higher kinetic energy which they would use to travel more randomly in the system, colliding more frequently with other excited molecules and with the wall of the containing vessel.

Thus, if temperature is increased, the number of collision per second also increases.

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PLEASE HELP ASAP
Leni [432]

Answer:

the answer is B

Explanation:

the answer is B

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The temperature of a sample of liquid water changes from 50°C to 30°C. Which statement best explains the change
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Answer:

The molecules move slower than the temp of 50°c and their average kinetic energy decreases.

Explanation:

kinetic energy cannot increase as temperature is reduced. molecules will still move with reduced motion.

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Which is NOT part of the definition of matter
qaws [65]

Answer:

Everything that has mass and takes up space is matter. Every day, you find something usual that either does't have mass or else don't take up space. Those things are non-matter. Basically, any type of energy or any abstract concept is an example of something that does not have matter.

Explanation:

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VashaNatasha [74]

Answer:

Explanation:

The lewis structure (indicating all the atoms and patterns provided as hint in the question) of glycine can be seen in the attachment below. While the chemical structure of glycine can be seen below

         H

          |

H₂N - C - C =O

          |      \

         H      OH

The structure (of glycine) above provides a "fair idea" of how the lewis structure will be.

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