A sample of pure lithium carbonate contains 18.8% lithium by mass.What is the % lithium by mass in a sample of pure lithium carbonate that has twice the mass of the first sample?
A)9.40%
B)18.8%
C)37.6%
D)75.2%

Question

Quizplus · Accepted Answer

Since the percentage of lithium by mass is the same in both samples, the % lithium by mass in the second sample is still 18.8%. Therefore, the answer is (B) 18.8%.

A Sample of Pure Lithium Carbonate Contains 18