Under certain conditions argon gas diffuser at a rate of 3.2 cm/s under the same conditions as unknown gas to visit a rate of 4.5 cm/s what is the approximate molar mass of the unknown gas

10 g/mol
20g/mol
28 g/mol
56 g/mol

c) 28 g/mol

Explanation: Rate of diffusion : It is defined as the volume of gas effused in a given time 't'.

Formula used :

According to Graham's law of diffusion, rate of diffusion is inversely proportional to the square root of the mass of the gas.

where,

= rate of diffusion of argon gas = 3.2cm/sec

= rate of diffusion of unknown gas = 4.5 cm/sec

= Molar mass  of argon gas= 40g/mol

=  Molar mass  of unknown gas

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be