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Camille_2G

What about sig figs for exponents? Like if you had e^3.18, would you have two total sig figs in your answer or would you have two decimal places in your answer?

Camille_2G

Camille_2G

Camille_2G

You know what's exciting?
Electrons moving to higher sub shells

Camille_2G

Arrange the following substances in order of increasing standard molar entropy:
CHF3 (g), CF4 (g), CH3F (g), CH2F2 (g)

CH3F (g) < CH2F2 (g) < CHF3 (g) < CF4 (g)

Can someone please explain why CF4 has the highest standard molar entropy?

Thanks in advance.

Camille_2G

Camille_2G

The absolute entropy for an element is not 0 as there is disorder with the atoms in the element. The absolute entropy is only 0 for perfect crystals when T=O K as all atomic motion stops at this temperature. Also, the change in entropy is not 0 when a compound is formed from its elements as there is...

Camille_2G

Can someone please explain how a reversible expansion gives the max amount of work and why work for a reversible process is more negative than work for an irreversible process?

Thanks in advance.

Camille_2G

w=-P(delta)V We have to use integrals to find work as the pressure is not constant. From the ideal gas law, P=nRT/V. As the external pressure (P) is not constant, V is also changing. Substituting the ideal gas law for P in the equation and changing delta V to dV, we then get w=\int (nRT/\Delta V...

Camille_2G

Yes, the triple point occurs for other molecules such as cyclohexane.

CHEMISTRY COMMUNITY

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Re: Sig figs

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Winter 2013 Midterm Q5B

Re: Post All Chemistry Jokes Here

Re: Exercise 9.37 (Absolute Entropies)

max amount of work

Re: Another "work" definition? [ENDORSED]

Re: Triple Point