Verified answer

HCOOH+C2H5OH --> HCO-O-C2G5+H2O

Mr (HCOOH) = 1+12+16+16+1 = 48 г/м

Mr (C2H5OH) = 12*2+1*5+16+1=46 г/м

хг = [tex]\frac{46g*240g}{74g}[/tex] = 149,2 г        

(g - грам)