culculate  the number of carbon atoms  present in 24 grams of methane?

Number of moles present in 24 g of methane -
= 24/16                 (atomic mass of Ch_​4 is 16 i.e 12+1*4=16)
=3/2 moles    
1 mole = 6.022*10²³
3/2 moles = 3*6.022*10²³/2
= 3*3.011*10²³ molecules of Ch4
now we have to find the total number of carbon atoms-
atomicity of C in Ch₄ = 1
Therefore, the number of carbon atoms in 24 g of Ch_{4
= 1*3*3.011*10²³
=9.033*10²³} atoms of carbon.
I hope Krishana this will help you!!!