Question

Vapour density of a gas with respect to CO2 is 2. Molecular mass of the gas is:
a) 22
b) 44
c) 66
d) 88
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Answer 1

Answer:

Explanation:

a)Molecular mass = 2 x vapour density

= 2 x 22

= 44

Therefore, molecular mass of a gas will be 44

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Answer 2

Correct Question:

Vapour density of a gas with respect to $\sf{CO_{2}}$ is 22. Molecular mass of the gas is:

a) 22

b) 44

c) 66

d) 88

AnswEr:

Option b) 44

SoluTion:

Given :

• Vapour density = 2

To find :

• Molecular mass.

Explanation:

We know that,

$\large{\boxed{\sf{\red{Vapour\:density_{(CO_{2})} = \dfrac{Molecular\:Mass}{2}}}}}$

Putting the values,

$\implies$ $\sf{Vapour\:density_{(CO_{2})} \times 2 = Molecular\:Mass}$

$\implies$ $\sf{22 \times 2 = Molecular\:Mass}$

$\implies$ $\blue{\sf{Molecular\:Mass=44\:Da}}$

Hence, option b) 44 is correct.