This is a PERCENTAGE COMPOSITION by mass problem.

What is the approximate percent by mass of the water in the hydrated salt?

Select one:
a. 98%
b. 88%
c. 2.5%
d. 12%

This is a PERCENTAGE COMPOSITION by mass problem What is the approximate percent by mass of the water in the hydrated salt Select one a 98 b 88 c 25 d 12 class=