A solution contains 39% phosphoric acid by mass.This means that ________.
A)100 g of this solution contains 39 g of phosphoric acid
B)1 mL of this solution contains 39 g of phosphoric acid
C)1 L of this solution has a mass of 39 g
D)1 L of this solution contains 39 mL of phosphoric acid
E)the density of this solution is 3.9 g/mL

Question

Quizplus · Accepted Answer

"39% phosphoric acid by mass" means that for every 100 units of the solution, 39 units are phosphoric acid. Therefore, 100 g of the solution contains 39 g of phosphoric acid.

A Solution Contains 39% Phosphoric Acid by Mass