Question

1.10 in three moles of ethane (C2H6), calculate the following:
(i) Number of moles of carbon atoms. (ii) Number of moles of hydrogen atoms.
(i) Number of molecules of ethane.​

Answer 1

Answer:

1 molecule of ethane contains 2 carbon atoms 

so 3 moles of ethane contains 6 mole of carbon atoms.

1 molecule of ethane contains 6 hydrogen atoms 

so 3 moles of ethane contains 18 mole of hydrogen atoms.

1 mole of ethane contains 6.023×10²³ molecules of ethane

so 3 mole of ethane contains 3×6.023×10²³ =18.069 ×10²³ molecules of ethane.