Official SAT Subject Test - Chemistry - June 2015

What was the total number of moles of ions created with one mole of Fe(SO4)3?

@Mango920452 I remember putting 5 moles for that question. Wasn’t it Fe2(SO4)3?

Yeah, my bad. I said 4, but I’m not sure.

Anyone know if a raw score of 80 would be good enough for an 800?

@Marshmallow99 Probably not :frowning: , but this test was hard in my opinion, I hope 80 is still an 800.

Haha we can pray :confused:

Either way, an 80 will give you a good score

That is true

On my PR book, 70+ is still an 800? Does that mean PR isn’t very accurate in terms of scores?

What type of reaction was purple labor above Iodine crystal?

What of the electron, proton, neutron, ones was for a noble gas?

What two substances could be like separated from water or something it was like H2 O2 and HCl?

What had the lowest freezing point?

When you dissolve a salt in a solution does it change its vapor pressure and boiling point?

@Tweedle I guess PR is harder? If you look at the scale in the Blue Book, it is nowhere near that.

Reduction? @divsnimmagadda

10 protons, 10 electrons, and 11 neutrons.
sublimation (purple solid)
I got E for that one - most amount of ions that were soluble
True (last question)
H2 and O2

It was not (500-320)/18 right. I was the complex fraction.

It was ((500-320)/18)/(320/160)

also what was the oxidation reaction in that group

it thought it was solid C turning into CO2

@divsnimmagadda C to CO2

@tooeasy Was it choice D (the complex fraction)

@Mango920452 I believe so, but don’t remember too clearly which answer choice it was