Question

Equal volume of two gases 'A' & 'B' diffuse through
a porous pot in 40 and 10 seconds respectively. If
the molar mass of 'A' is 100, then calculate the
molar mass of gas 'B'.
(1) 10 g/mol
(2) 8.5 g/mol
(3) 6.25 g/mol
(4) 4 g/mol​

Answer 1

Answer:

3

Explanation:

t2/t1 =(M2/M1)^1/2

10/40 = (m2/100)^1/2

1/4 = (m2/100)^1/2

1/16= m2/100

m2 =100/16

m2 = 6.25g