Question

Certain mass of a gas occupies 20litre volume at 300k and 2atm pressure.calculate molecules of the gas present in it

Answer 1

Answer hope its help to you

Explanation:we know that

p1v1/t1 p2v2/t2

where

p1=pressure given which is 1.2

p2 =1 (stp)

v1 =volume given

v1=volume at stp

t1=temperature given

t2=temperature at stp

we need to change the volume according to stp

putting value

1.2×20/300=1×v2/273

v2=21.84 l

now,no. of moles =21.84/22.4=0.975