*If I don’t get higher than 720
Ah I thought the chem was more difficult than the Barron’s tests I was practicing from. Now all I can do is wait and be worried about my score
@soporificturtle Didn’t that question ask which one is not an observation? So then it wouldn’t be copper wire disappearing?
I got some consecutive C’s. Don’t remember how many though.
@bobthebuilder13 I think so, I chose the option about electrons because you wouldn’t be able to observe that?
Yeah that’s what I chose too.
nice, now I feel assured that I at least got a 330 #blesstfup
@sodiumchloride12 I also chose (D) which was the electrons. Unlike the obvious visibility of a copper wire disappearing, you physically can’t observe the transfer of electrons.
Someone said that D was the copper wire disappearing answer choice. Are you sure that D was the one with the electrons?
Yes, D was electrons. I remember I chose the 2nd to last answer, which is D.
What did you all say for the question about the rates of diffusion for oxygen gas and something else? I forget the question but it was near the end and the answer options were like 32/28, 28/32, 1, etc.
I put 28/32
.5 moles N2 and .5 moles of O2? I can’t remember…what was the answer?
I was confused about that because the relative rates of diffusion/effusion equation is a/b= sqrt[molar mass of b]/sqrt[molar mass of a] but that didn’t seem to be an answer option
Didn’t that question ask for the ratio between the partial pressures of the gases? Not diffusion rates?
I put 1.
I’m so relieved. I also put that… I pray so hard that this curve is just as generous as the one in the Barrons book. Please!!!
@bobthebuilder13 hm, you’re probably right. Do you remember if the question specified that the gases were all under the same conditions? If so, I probably also chose 1.
Yeah they were in the same container with the same temperature. The one about diffusion rates’ answer was CH4 if I remember correctly.
Remember that equation with the 7 o2 and 1 c3h8 or something like that? What was leftover?
it was either 1, 2, 3, or 4 moles