Different gases at the same temperature and pressure have different average speeds because of mass differences, right?
Yea KE = .5 mv^2 so the two thugs that affect kinetic energy, and ultimately temperature, are mass and velocity
For #17:
Since the color changes past the actual eq point, the student records a higher volume of titrant. Higher volume of the same concentration of base leads to a higher calculated moles of base. More moles base = more moles acid. More moles acid = greater calculated molarity.
The .08 vs. .125 is just calculating the molarity of the acid from the original diagram.
Also, for the LDF thing. I looked in Crash Course and it said that you shouldn’t use high mass as a reason for high LDF.
I would say that condensation occurs because the molecules will hold together more easily due to their high intermolecular forces.
Wait is the thing dropping called the titrant? And whats the thing it’s being dropped into? The titrated solution? Could someone help with the terminology lol
Titrant - thing you are adding
Titrand or analyte - thing being added to
@baller55 - Thanks! Forgot that I could use that equation outside of physics 
Also, can someone explain the relationship between internuclear distance and potential energy with single, double, and triple bonds?
Hey So I am obviously taking the test monday, and I wanted to know something. I get usually 50% on FRQs and 33-50% on MP Questions. I was wondering if anyone knew how well that would translate on AP Exam like 3,4, or 5. I also wanted to know if anyone had any advice on improving the score even though its so close to exam day.
Thats a low 3 high 2 chris
I thought the new Ap exam’s 5 was 70% which is lower than previous one’s. Using previous composite scores and calculators. I calculated high 3
@Chris360911 - Look up the conversions on AP Pass for the 2008 exam; the curve is going to be slightly harsher because of the exam change.
I’m looking at the 2014 exam conversion right now, and it goes like this (composite score, not percentages):
5: 72-100
4: 58-71
3: 42-57
2: 27-41
1: 0-26
which is no guarantee that the 2015 scores will relate. Just shoot for 80% 
Using your new conversions, If i had 50% on MP, and 50% on FRQs which I reguarly get, then I get a 5 because thats a composite of 78
Think of the test like this…
The scoring is 50/50. And you can estimate that you need 45% for a 3.
X/2 + y/2 >45
The higher bond order the higher the PE and shorter the bond length (shorter internuclear distance).
I get O2 and N2 but not H2 for #17 on 2014. I guess that H2 is where it is because it is a few energy levels smaller than O2 or N2.
EDIT: I looked again and higher PE is wrong. I meant higher bond orders are more stable, and I guess that means less energy.
Take this with a grain of salt, though. Im not sure.
@skieurope Thats why I added that second part to my original question. How would i pull up my score?
Guys, I’m nervous for Free Response. Does anyone have any idea on what specific topics they’ll be on? Safe to assume that they won’t ask ones that are really similar to last year’s exam to vary it up?
probably equilibrium, kinetics, thermochemistry, acids and bases, electrochemistry
right, and prob buffers
@taw1020 - Thanks so much! If you look really closely, the Z2 dip is slightly lower than the X2…I think that’s why H2 is X2, but your explanation makes sense too.
Last question (hopefully) about the 2014 test (sorry for spamming this thread ahh): how do you figure out #22? Two 1-mole samples of gases (CO and H2) are pumped into a 2 L vessel at 483 - what’s true about the concentrations at equilibrium?
I think the free response is gonna be as follows; call me prophetic
Ka/kb
Kinetics
Electrolytic cell
Ksp
Bonding / Lewis structures
Half life
Kp kc