Question

In three moles of ethane (C₂H₆ ) calculate the following: 

1. Number of moles of carbon atoms. 

2. Number of moles of hydrogen atoms. 

3. Number of molecules of ethane.

Answer 1

(1) 1 mole of C₂H₆ contains 2 moles of Carbon atoms. 

∴ 3 moles of C₂H₆ will have 6 moles of Carbon atoms. 

(2) 1 mole of C₂H₆ contains 6 moles of Hydrogen atoms. 

∴ 3 moles of C₂H₆ will have 18 moles of Hydrogen atoms. 

(3) 1 mole of C₂H₆ contains 6.023 x 10²³ number of molecules. 

∴ 3 moles of C₂H₆ will contain 3 x 6.023 x 10²³ molecules.