Official SAT Subject Test - Chemistry - June 2015

@xexvc0302 I’m not really sure what you mean by the ideal gas law… we know that gases deviate from ideal behavior at low temperatures and high pressure; therefore, temperature is a function of deviations from ideal behavior.

the question said volume was constant, so density would be constant and temperature wouldn’t affect it. I think density is correct, but I hope its total energy =)

Ok @topaz1116 Can you give me a link to the conversion table from the CollegeBoard? I can’t find it.

It’s density for sure. I have zero moles of doubt.

how many questions were on this test??? Im such an idiot I assumed question 70 was the last one.

How many questions were on this test?

Question 70 was the last one…

Total energy of an ideal gas IS kinetic energy (ideal gases don’t have any potential energy whatsoever), therefore, total energy is a function of temperature.

there is 70 questons plus the 15 T/F section…

Thank you im an idiot lol

@xexvc0302 @lm4992 it’s definitely density. Total energy = KE + PE, and KE = (1/2)mv^2 = (3/2)RT, so KE is a function of temperature.

you forget that density = P*MM/RT

  1. 70 plus the 15 t/f questions

Heating a substance causes molecules to speed up and spread slightly further apart, occupying a larger volume that results in a decrease in density

i think question said constant volume

constant volume or not, density is stil a function of temperature using the formula i just typed

I just forgot about the T and F…I was stressing so much I was looking up how to cancel my scores…

Therefore, I think the question is not a well-typed question. It only asked for whether each choice was a function of temperature. It should have asked which of these is not affected by a change in temperature.

temperature does not impact energy. Think of first law of thermodynamics: energy cannot be created or destroyed.

@Arpeggio206 but changing temperature requires the addition or removal of energy