Chemistry - Mole Concept Question with Solution | TestHub

ChemistryMole ConceptAtomic mass/Average Atomic Mass/Average Molecular MassMedium2 minQB

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A sample of water contains only $H^{1}$ and $H^{2}$ atoms in 4 : 1 atomic ratio and $O^{16}$ and $O^{17}$ in $5 : 2$ atomic ratio. The average molecular mass of such water is :

Options:

Answer:

Solution:

Average atomic mass of $^{'} H^{'} = \frac{1 \times 4 + 2 \times 1}{5} = 1.2$

Average atomic mass of $^{'} O^{'} = \frac{16 \times 5 + 2 \times 17}{7} = 16.28$

So Average molecular mass of $H_{2} O = 1.2 + 1.2 + 16.28 = 18.68$ ]

Stream:JEESubject:ChemistryTopic:Mole ConceptSubtopic:Atomic mass/Average Atomic Mass/Average Molecular Mass

⏱ 2mℹ️ Source: QB

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