GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Mass of 2 Moles of H2O is
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2g
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18 g
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36g
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20 g
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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: -To obtain the mass of 2 moles of water, we simply the number of moles by molar mass: 2 moles X [2(1) + 16]g/mole = 36 g.
Detailed explanation-3: -Thus, 36 g of water is equivalent to 1. 2×1024 molecules.
Detailed explanation-4: -The molecular mass of 2H2O is 36 a.m.u. A total of 4 hydrogens and 2 oxygens are present in the given compound.
There is 1 question to complete.