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Question

In three moles of ethane calculate the following:
Number of moles of carbon atoms.
Number of moles of hydrogen atoms.
Number of molecules of ethane

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Solution

Dear Student,a) 1 mole of ethane contain 2 moles of carbon atom3 moles of ethane contain 2 ×3 moles of carbon atom So, 3 moles of ethane contain 6 moles of carbon atom b) 1 mole of ethane contain 6 moles of Hydrogen atom3 moles of ethane contain 6 ×3 moles of Hydrogen atom So, 3 moles of ethane contain 18 moles of Hydrogen atom c) 1 mole of ethane contain = 6.023 × 1023 molecules of ethane 3 mole of ethane contain = 3×6.023 × 1023 molecules of ethaneSo, 3 mole of ethane contain 1.806 ×1024 molecules of ethane

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