Benzoic acid was mixed with methanol and heated under reflux. The reaction mix was extracted with dichloromethane and washed with sodium carbonate solution, then washed with saturated sodium chloride solution. After being dried over magnesium sulfate, the solvent was distilled off to yield the ester product, methyl benzoate. Write down wastes generated in this reaction.

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.

the answer your looking for is c).