# Chemistry Lab Help!! PLS!!?

A sample of hydrated salt weighs 3.8526g before it is heated. After heating to a constant mass the sample weighs 2.3658g. Determine the mass percent of water in the sample.
..so I know to calculate mass percent is dividing mass of the water by the molar mass of the hydrate. then x100, but what do I do with the two...
show more
A sample of hydrated salt weighs 3.8526g before it is heated. After heating to a constant mass the sample weighs 2.3658g. Determine the mass percent of water in the sample.

..so I know to calculate mass percent is dividing mass of the water by the molar mass of the hydrate. then x100, but what do I do with the two different weights?

..so I know to calculate mass percent is dividing mass of the water by the molar mass of the hydrate. then x100, but what do I do with the two different weights?

Follow

4 answers
4

Are you sure you want to delete this answer?