VgCarlos3787

09.10.2019 • 

Chemistry

Asample of hydrated calcium sulfate has a mass of 2.643 g. after dehydration, the sample has a mass of 2.090 g. what is the percent by mass of water in the hydrate?
%
a sample of hydrated iron (ii) chloride has a mass of 0.385 g. after dehydration, the sample has a mass of 0.245 g. what is the percent by mass of water in the hydrate?

%
a sample of hydrated magnesium chromate has a mass of 8.557 g. after dehydration, the sample has a mass of 5.211 g. what is the percent by mass of water in the hydrate?
%

Ответ:

isalih7256

06.01.2022

Chemistry

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For the first one
2.643-2.090= .553
.553 is the grams of water that the hydrate had before dehydration
.533/2.643=.209
.209×100= 20.9% water

Just do the same thing for the other problems

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Ответ:

tonimgreen17p6vqjq

04.07.2022

Chemistry

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#blacklivesmatter

Explanation:

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