calculate the molecular formula of hydrocarbons which contains 85.7% and 14.3% of hydrogen and has molecular mass 84
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Answer:
C6H12
Explanation:
Hydrogen=14.3% of 84
=(14.3×84)/100
=(143×84)/1000
=12012/1000
=12
carbon=total mass-hydrogen mass
=84-12
carbon=72
mole of carbon=72/12=6
mole of hydrogen=12/1=12
therefore chemical formula is C6H12
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