how do you figure out the specific heat one anyway?
Well I sure did 
Whaaaaat? How many water? I don’t remember about that either!!! I only omitted 2 questions tho! And one of them is the big equation one
I am sure that is alright.
@blandscreenname You use q sys = -q surroundings and plug in the values to solve for C, the specific heat of the metal.
@tina23 If it helps, the question had a CuSO4 with nH20, it asked for the formula which would give us n, and it had an experiment that gave us some data to help find the answer.
Okay, I did not know that.
It was (500-320)/18
@mayagotocollege it was .5, and .32, so if we did that, we’d get a decimal, which wouldn’t be appropriate, thats what I thought anyways.
Yup. I got 0.7 for the specific heat.
When I tried getting 0.7, I couldn’t figure it out.
no. The calculation to do that would be finding how many grams of water were driven off, and then divide that by waters molar mass (18) to get 10 for your coefficient
@maygotocollege The problem was that the numbers given were decimals. The entire compound weighed 0.500 g, and it weighed 0.320 g after all of the water was evaporated. If you subtracted those two values and then divided by 18, you would’ve gotten 0.01. However, it was asking for the coefficient of the H2O in the CuSO4 * xH2O formula.
I think I put the answer choice that had ((0.500-0.320)/18) / (0.320/160)
The exothermic reaction is the 2O–> O2 because when bonds are formed energy is released.
what was the compound with the lowest chlorine mass by percentage?
I also got C4H6, figuring that it was the only answer that didn’t match the C:H ratio of another answer.
I think it was NaCl? @blandscreenname
@blandscreenname I think I put NaCl, but I can’t quite remember
I can’t believe I changed my answer for the exothermic reaction at the last second 
lowest chlorine mass percentage was NaCl