Which of the following defines the ratio for mass of 1 molecule of gas or vapour to mass of 1 atom of hydrogen?

Atomic number

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Relative atomic mass

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Relative molecular mass

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Vapour density

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Solution

The correct option is C
Relative molecular mass

Relative molecular mass defines the ratio of mass of 1 molecule of gas or vapour to mass of 1 atom of hydrogen.

Relative molecular mass of a gas = $\frac{M a s s o f 1 m o l e c u l e o f t h e g a s o r v a p o u r}{M a s s o f 1 a t o m o f h y d r o g e n}$

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Which of the following defines the ratio for mass of 1 molecule of gas or vapour to mass of 1 atom of hydrogen?

The correct option is C Relative molecular mass Relative molecular mass defines the ratio of mass of 1 molecule of gas or vapour to mass of 1 atom of hydrogen. Relative molecular mass of a gas =Mass of 1 molecule of the gas or vapourMass of 1 atom of hydrogen