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stopithelpmeplease
08.01.2021 •
Chemistry
2H2 + O2- 2H20
Which conversion factors will you need to calculate the
mass of H2O that is made when 8 grams of H2 react?
Solved
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Ответ:
Conversion factor : molar mass/molecular weight
Mass of H₂O produced = 72 g
Further explanationGiven
Reaction
2H2 + O2- 2H20
8 grams of H2
Required
Conversion factors
Solution
We can use the molar mass of the components and the mole ratio as conversion factors for the above equation
mol H₂ (MW = 2 g/mol) :
From the equation, mol ratio of H₂ : H₂O = 2 : 2, so mol H₂O = 4 mol
mass H₂O(MW = 18 g/mol) :
mass = mol x MW
mass = 4 x 18
mass = 72 g
Ответ:
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