The mass of a molecule of water is
- A$3 \times 10^{-26} \ kg$
- B$3 \times 10^{-25} \ kg$
- C$1.5 \times 10^{-26} \ kg$
- D$2.5 \times 10^{-26} \ kg$
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What is the total number of moles of $C$ atoms and $H$ atoms respectively present in $n$ moles of the following molecule?
What is the mole fraction of oxygen in a mixture of $7 \ g$ of nitrogen and $8 \ g$ of oxygen?
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View SolutionWhat is the number of atoms present in $2.24 \ dm^3$ of $NH_3$ $(g)$ at $STP$?
Assertion : Equal moles of different substances contain same number of constituent particles.
Reason : Equal weights of different substances contain the same number of constituent particles.
Reason : Equal weights of different substances contain the same number of constituent particles.
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View SolutionNumber of molecules in $100 \ mL$ of each of $O_2$,$NH_3$,and $CO_2$ at $STP$ are
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