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?

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Answer 1 · 2018-02-06T01:37:03

#"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"#