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Jonathan Farley
Chemistry
24 March, 11:03
How many moles are in 349.3 g of H2O
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Genevieve Zamora
24 March, 11:20
0
Answer: 19.405 mol
Explanation: 1 mol of H2O is equal TO 18 g/mol
349.3 g of H2O / 18 g/mol=19.405
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Kennedy Poole
24 March, 11:29
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19.38 moles
Explanation: When in doubt, use stoichiometry
Molar mass of H2O = 2 (molar mass H) + molar mass O
=2 (1.01) + 16.00 = 18.02
Now, you just convert:
349.3g (1 mol H2O/18.02gH2O)
= 19.384
But the value given has 4 significant figures, so we write it as 19.38
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