A hydrocarbon contains 85.7 % C. If 42 mg of the compound contains 3.01xx10^(20)molecules, the molecular formula of the compound will be ......

A hydrocarbon contains 85.7 % C. If 42 mg of the compound contains 3.0

1.	A hydrocarbon contains 85.7 % C. If 42 mg of the compound contains 3.01xx10^(20)molecules, the molecular formula of the compound will be ......
Answer» <html><body><p>`C_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)H_(6)`<br/>`C_(6)H_(12)`<br/>`C_(12)H_(24)`<br/>`C_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)H_(4)`</p>Solution :Mass of `3.01xx10^(20)` <a href="https://interviewquestions.tuteehub.com/tag/atoms-887421" style="font-weight:bold;" target="_blank" title="Click to know more about ATOMS">ATOMS</a> `=42xx10^(-3)g` <br/> `:.` Mass of `6.02xx10^(<a href="https://interviewquestions.tuteehub.com/tag/23-294845" style="font-weight:bold;" target="_blank" title="Click to know more about 23">23</a>)` atoms `=84g` <br/> `:.` Molecular formula : `C_(6)H_(12)` (C of 85.7)</body></html>