alleryHow many moles of water are in 1 L at 4 C? (Density of water = 1 g per mL, molar mass H2O = 18)
A55.6 moles
B18 moles
C5.6 moles
D100 moles
Answer & Solution
Correct answer: A. 55.6 moles
1. Mass of 1 L of water = 1000 g (density 1 g per mL).
2. Moles = mass / molar mass.
3. = 1000 / 18.
4. = 55.6 moles.
5. So 1 L of water contains about 55.6 moles.
_Source: Selina Concise Chemistry ICSE Class 10, Ch 5 'Mole Concept and Stoichiometry'_
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