3.Hydrogen and Oxygen combine in
the ratio of 1:16 by mass to form
Hydrogen peroxide. What mass of
oxygen gas would be required to
react completely with with 50 g of
hydrogen gas?
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It is given that the ratio of hydrogen and oxygen by mass to form water is 1:16. Then, the mass of oxygen gas required to react completely with 1g of hydrogen gas is 16g. Therefore, the mass of oxygen gas required to react completely with 50 of hydrogen gas is 16 × 50g = 800 g.
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