The concentration of sodium sulfate solution is 18.6% by mass. There are ________ g of sodium sulfate present in a 236.5 g sample of this solution.
A)44.0
B)4400
C)0.000786
D)7.86
E)1270

Question

Quizplus · Accepted Answer

The concentration of 18.6% by mass means that there are 18.6 grams of sodium sulfate in every 100 grams of solution. Therefore, in a 236.5 g sample, the amount of sodium sulfate is (18.6/100) * 236.5 = 44.0 g.

The Concentration of Sodium Sulfate Solution Is 18