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How many moles of water are there in 45 g of water? a) 1.0 moles b) 1.5 moles c) 2.0 moles d) 2.5 moles

How many moles of water are there in 45 g of water? a) 1.0 moles b) 1.5 moles c) 2.0 moles d) 2.5 moles
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How many moles of water are there in 45 g of water?

a) 1.0 moles
b) 1.5 moles
c) 2.0 moles
d) 2.5 moles

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User Xxxxxxx
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7.9k points

1 Answer

10 votes
D because the molar mass of H2O is 18.02 g/mol. You do this by adding the AMU of each element. 45/18.02 = approx. 2.5 moles.
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User Hemanth Kumar
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