Suppose 10.000 grams of a hydrate were placed into a crucible and then heated until all the water was driven off. The mass of the anahydrate was 7.500 grams. Calculate the percent water in this hydrate?

1 Answer
Feb 6, 2018

"Total weight = 10 g" = 100 %weight

"Lost weight = Evaporated Water = 10.0 - 7.5"

"= 2.5 g = x %weight"

Calculating the %water vapor:

("100 %t"/"10 g") " 2.5 g"= color(blue)"25 %wt of vapor water"