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Rzqust [24]
3 years ago
5

On a potential energy diagram for the following processes, which of the following has an increase in entropy?

Chemistry
2 answers:
daser333 [38]3 years ago
7 0
Hello,

I believe that your answer would be <span>B. water freezes
</span>Hope this helps
Vaselesa [24]3 years ago
3 0

Answer: A. ice melts

Explanation: Entropy is the measure of randomness. A molecule with high disorder has high entropy.

When ice melts, solid changes to liquid and thus the molecules become more disordered.

When water freezes, liquid changes to solid, and thus the molecules become more ordered.

When steam condenses, gas changes to liquid and thus molecules become more ordered.

When water cools down in a refrigerator, liquid changes to solid, and thus the molecules become more ordered.


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How many mL of 0.100 M NaCl would be required to make a 0.0365 M solution of NaCl when diluted to 150.0 mL with water?
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Answer:

54.75 mL

Explanation:

First calculate the number of moles of NaCl in the 150mL solution of NaCl

0.0365 moles should be present on 1000cm3 or 1dm3 of water.

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1 mL = 1 / 1000 dm3

150 mL = 150/1000 dm3 = 0.15 dm3

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x/ 0.15 = 0.0365

We get x= 0.0365 × 0.15 mol

Now x amount of moles should be taken from the initial 0.100 M NaCl solution

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we get V = 0.05475 dm3

V= 0.05475 L

V= 54.75 mL

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3 years ago
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Answer:

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