Question

Example.1.3 If the mass of 94.5 mL of any gas is
0.2231 g at STP then find out the molecular
weight of gas?​

Answer 1

Answer:

55.775

Explanation:

Let, the gas be=x

given volume of gas at STP is=94.5mL

So, No. of moles of 'x'= given volume

22.4L

= 94.5mL

22400mL

=0.004mol

Now, the given mass of gas is=0.2231g

So, No. of moles of gas 'x'= given mass

molecularmass

0.004= 0.2231

molecular mass

molecular mass= 0.2231

0.004

=55.77g/mol