ro= m/v
0,76g/ml= m/1000----->m=760g= ms-masa solutiei de alcool
c=mdx100/ms
94/100=md/760------> md=714,4g- masa alcoolului
2mol alcool.........1mol butadiena
2x46g.......................54g
714,4g.........................m=419,32g butadiena ,cu randament 100%=m,teor
m,practica ,butadiena= 419,32x80/100g=335,45g