Question

the vapour density of gas a is twice that of gas B if the molecular weight of B is M then calculate the molecular weight of a​

Answer 1

Explanation:

Vapour density of B = a /2

molecular mass of B = M

vapour density = molecular mass / 2

molecular mass of a = vapour density * 2

= 2B * 2

= 2 * M / 2 * 2

= 2M

Answer 2

Answer:

2M.

Explanation:

We know from the vapour density of the gas B is given as A/2.

Again, we let thatthe molecular mass of B is given as M.

The vapour density of the molecule is given as its molecular mass / 2.

So, we get that the molecular mass of A as = vapour density * 2

= 2* B * 2 since vapour density of A will be 2 times of B or 2B.

= 2 * M / 2 * 2

Which on solving we will get = 2M.