The molar mass of water open paren cap h sub 2 cap o close paren is 18 point 0 g over mol A sample of water has a mass of 18 point 0 g How many moles of water are contained in this sample?
Answer
A
18 point 0 moles
B
1 point 0 0 mole
C
324 moles
D
36 point 0 moles
Explanation
Use moles = mass ÷ molar mass. For this sample, 18.0 g ÷ 18.0 g/mol = 1.00 mol, so the correct choice is 1.00 mole.
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