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In a laboratory, 178.8 g of water is seperated into hydrogen gas and oxygen gas. the hydrogen gas has a mass of 20.0 g. what us the mass of oxygen gas produced?

In a laboratory, 178.8 g of water is seperated into hydrogen gas and oxygen gas. the hydrogen gas has a mass of 20.0 g. what us the mass of oxygen gas produced?
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in a laboratory, 178.8 g of water is seperated into hydrogen gas and oxygen gas. the hydrogen gas has a mass of 20.0 g. what us the mass of oxygen gas produced?

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User Onan
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The answer is 158.8 grams all I did was subtract 20 from 178.8 since we already know that is the mass of hydrogen gas.
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User Hindu
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