Apply the law of constant proportion to calculate the mass of oxygen that will be used up for combustion of 5 g of hydrogen gas.
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Answer:
40g
Explanation:
In water or H2O-Hydrogen and oxygen are present in 1:8 by mass.
That means 1gram of hydrogen and 8g of oxygen are required in forming 9g of water.
Similarly for burning 5g of hydrogen,we required
(5*8=40) 40 g of oxygen
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