Answers

2015-05-22T15:18:20+05:30
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
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