c.
Explanation:
I mainly think its c. from my point of view because as yoy can see they showed observations and explained certain information and they didnt conclude it as it's TRUE they said theories meaning its and Idea and something that is not fully proven happend.
Molarity=moles/liter
molarity=43/0.64
molarity=67.19moles/litre
I got B. Because the answer is K2SO4, I got it right on my test so I know its right
Boiling points are a measure of intermolecular forces. The intermolecular forces increase with increasing polarization of bonds. Boiling point increases with molecular weight, and with surface area.