(Answered) 1how many grams of mixture are there if 200ml of methanol

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1)How many grams of mixture are there if 200mL of methanol is mixed with 350mL of benzene?

2)A compound is a common first-aid antiseptic. The products of its combustion reaction in the presence of oxygen gas are water and carbon dioxide. This compound is composed of carbon, hydrogen and oxygen. If 7.003 g of this compound produces 13.379 g carbon dioxide and 8.217 g water, what is the empirical formula of this compound?

3)A compound, made only from mercury and sulfur, is 86.2% HgHg by mass. The molar mass of this compound is 465 g/mol. Determine the empirical formula and the molecular formula of this compound.

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