Question

in three moles of ethane calculate the following 1no of moles of carbon atoms 2 no of moles of hydrogen atom 3no of molecules of ethane

Answer 1

Three moles of ethane i.e., 3C(2)H(5).
1. The coefficient of C(2) molecule is 3 so moles of Carbon atom is 3*2 = 6 moles.

2. similarly 3*5 = 15 moles of Hydrogen atom.

3. Coefficient of ethane is given 3 as 3 Moles so molecules of ethane is 3.