Asked by Duhe
Determine the mass of hydrogen gas if 36g of water undergoes electrolysis to produce hydrogen and oxygen.
Answers
Answered by
DrBob222
Write and balance the equation.
Stoichiometry problem are worked this way.
2H2 + O2 ==> 2H2O
Convert 36 g H2O to moles. moles = grams/molar mass
Using the coefficients in the balanced equation, convert moles H2O to moles H2 gas.
Now convert moles H2 gas to grams. g = moles x molar mass.
Stoichiometry problem are worked this way.
2H2 + O2 ==> 2H2O
Convert 36 g H2O to moles. moles = grams/molar mass
Using the coefficients in the balanced equation, convert moles H2O to moles H2 gas.
Now convert moles H2 gas to grams. g = moles x molar mass.
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