A chemist mixes 48.8 g of carbon tetrachloride with 2.91 g of isopropenylbenzene and 7.04 g of 2-ethyltoluene. Calculate the percent by mass of each component of this solution.

Answer 1

The percent by mass of each will be the mass of each divided by the total mass (x100%)

Total mass = 48.8 g + 2.91 g + 7.04 g = 58.75 g

% carbon tetrachloride = 48.8 g / 58.75 g (x100%) = 83.1%

% isopropylbenzene = 2.91 g / 58.75 g (x100%) = 4.95%

% 2-ethyltoluene = 7.04 g / 58.75 g (x100%) = 12.0%