200 g of a mixture of calcium and calcium oxide was dissolved in water. 4g of hydrogen was released.
| November 25, 2020 | education
200 g of a mixture of calcium and calcium oxide was dissolved in water. 4g of hydrogen was released. Find the mass of each substance in the mixture.
Given:
Ca and CaO-200g
H2-4 g
To find:
m (mass) -?
Decision:
X-g 4-g
Ca + H2O → CaO + H2 ↑
40g 2g
x = 40 4/2 = 80g (Ca)
mCaO = 200-80 = 120g
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