Question

How many hydrogen atoms are their in 30 g of C2H6

Answer 1

$\huge\tt\colorbox{pink}{αղsաҽɾ}$

One mole of ethane has 6 atoms of hydrogen and one mole of ethane has mass 30 amu. Therefore 60 amu of ethane means 2 moles. This means 6×2=12 atoms of hydrogen.

• Thnku :)