mtztiana mtztiana

31-05-2017
Chemistry

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mass of 6.584 g. After it is heated, it has a mass of 4.194 g. What is the percentage by mass of water in the hydrate?

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dec77cat dec77cat

31-05-2017

m₁=6.584 g
m₂=4,194 g

m(H₂O)=m₁-m₂

w(H₂O)=m(H₂O)/m₁

w(H₂O)=(m₁-m₂)/m₁

w(H₂O)=(6.584-4.194)/6.584=0.3630 (36.30%)

the percentage by mass of water in the hydrate 36.30

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