Question

What is the percent by mass of rubbing alcohol in a solution that contains 275 g of rubbing alcohol in 500 g of solution.​

Answer 1

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Answer 2

Given - Mass of solute - 275 gram

Mass of solution - 500 gram

Find - Percent by mass of rubbing alcohol in given solution.

Solution - Mass percent can be calculated by the formula - (Mass of solute/ Mass of solution)*100

Keeping the values in equation-

Mass percent - (275/500)*100

Mass percent - 0.55*100

Mass percent - 55%

Hence, the percent by mass is 55%.