Essential Chemistry for IGCSE - Chemical Calculations (Section 7 - No. 31)
How many moles are there in 36 g of water (H2O)? (H=1, O=16)
0.5 moles
1.0 moles
1.5 moles
2.0 moles
Explanation
Molar mass of H2O = 18 g/mol. Moles = 36/18 = 2.0 moles
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