Homework 8.29

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Megan Purl 1E
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Homework 8.29

Postby Megan Purl 1E » Mon Jan 15, 2018 9:23 pm

Which molecular substance do you expect to have the higher molar heat capacity, NO or NO2? why?

Cali Rauk1D
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Re: Homework 8.29

Postby Cali Rauk1D » Mon Jan 15, 2018 9:24 pm

It is NO2 because the more molecules there are the higher the heat capacity can be.

Jason Liu 1C
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Re: Homework 8.29

Postby Jason Liu 1C » Mon Jan 15, 2018 9:58 pm

I think it has more to do with how many atoms are in each molecule

Kayla Danesh 1F
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Re: Homework 8.29

Postby Kayla Danesh 1F » Mon Jan 15, 2018 10:03 pm

In addition to what has already been said, you can think about the fact that NO2 has more bonds than NO. This means that for a given amount of energy that is applied toward breaking the bonds, the energy is absorbed by 4 bonds (in NO2) as opposed to just 2 bonds (in NO). So, it will take more energy to break a molecule of NO2, which means it has a higher heat capacity than that of NO.

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Re: Homework 8.29

Postby AtreyiMitra2L » Mon Jan 15, 2018 10:06 pm

If you think about it, the more atoms there are, the more heat is required to raise the substance by 1 degree celsius. Therefore, because NO2 has 3 atoms rather than only 2, it takes more heat because there are more atoms that can absorb the heat.

Abigail Urbina 1K
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Re: Homework 8.29

Postby Abigail Urbina 1K » Wed Jan 17, 2018 12:21 am

NO2 is more complex than NO considering it has one more atom in it. This makes the molecule more complex. Since there are more atoms present, there is room for more energy to be absorbed, hence a larger capacity for heat.

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