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If you have the reaction of 40 grams of water decomposing into hydrogen and oxygen what would be the total mass of your products?
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If you have the reaction of 40 grams of water decomposing into hydrogen and oxygen what would be the total mass of your products?

User Tore Eschliman
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2H2O ==> 2H2 + O2
Convert 40.0 grams of water to moles.
moles = grams/molar mass

Use the coefficients in the equation to convert mols H2O to moles O2.

Convert moles O2 to grams. g = mols x molar mass
User Frank Eno
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