SSC
CHEMISTRY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If the mass of
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2 moles
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0.5 moles
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5 moles
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None of the above
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Explanation:
Detailed explanation-1: -The mass of water is $36g$. We know that the molecular mass of water is $18g/mol$. One can calculate the number of moles in a substance using the above formula. Hence, the number of moles in $36g$ of water is two moles.
Detailed explanation-2: -∴1.2044×1025 molecules and 20 moles are equivalent to 360 g of water.
Detailed explanation-3: -A glass of water, or 200 grams of water, therefore contains 6.6855 × 1024 water molecules.
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