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Calculate the number of hydrogen atoms p...

Calculate the number of hydrogen atoms present in 90 amu of ethane.

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Verified by Experts

Molecular mass of ethane `(C_(2)H_(6))=2xx12+6=30`
Mass of 1 molecule of ethane=30 amu
`therefore` Number of molecules in 90 amu of ethane `=(90)/(30)=3`
Thus, no of H-atoms present in 90 amu of ethane=`3xx6=18`
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