I need help with a chemistry problem

Acetic acid (CH3CO2H) reacts with isopentyl alcohol (C5H12O) to yield isopentyl acetate(C7H14O2), a fragrant substance with the odor of bananas.

Part A- If the yield from the reaction of acetic acid with isopentyl alcohol is 45%, how many grams of  isopentyl acetate are formed from 3.68g of acetic acid and 4.09g of isopentyl alcohol? The reaction is CH3CO2H+C5H12OarrowC7H14O2+H2O.

m=_______g

Part B-if 1,87g of acetic acid (CH3CO2H) reacts with 2.31g of isopentyl alcohol(C5H12O) to give 2.96g of isopentyl acetate(C7H14O2), what is the percent yield of the reaction?_________%

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