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25.09.2019 •
Chemistry
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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Ответ:
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
Ответ:
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