Question

If I g of sulphur dioxide contains x molecules, what will be
number of molecules in 1 g of methane?
(S = 32u, 0= 16 u, C = 12 u, H = 1 u).​

Answer 1

Explanation:

first change gram to mole.

mole=given mass/molar mass.

=1/64

how 64 came?

so2=32+16*2

=64mol

the molecules of both compound will be same.

CH4= 12+1*4

=16

16mol

mole of 16g of methane=1mol

mole if 1g of methane =1/64mol

x*64/16=4x molecules