A sample of ethane has the same mass as 10.0 million molecules of methane. How many C_2H_6 molecules does the sample contain?

A sample of ethane has the same mass as 10.0 million molecules of meth

1.	A sample of ethane has the same mass as 10.0 million molecules of methane. How many C_2H_6 molecules does the sample contain?
Answer» <html><body><p></p>Solution :Let the number of `C_2H_6` molecules in the sample be n. As given, <a href="https://interviewquestions.tuteehub.com/tag/mass-1088425" style="font-weight:bold;" target="_blank" title="Click to know more about MASS">MASS</a> of `C_2H_6` = mass of `10^7` molecules of `CH_4` <br/> `n/("<a href="https://interviewquestions.tuteehub.com/tag/av-888878" style="font-weight:bold;" target="_blank" title="Click to know more about AV">AV</a>. <a href="https://interviewquestions.tuteehub.com/tag/const-11346" style="font-weight:bold;" target="_blank" title="Click to know more about CONST">CONST</a>") xx` mol wt. of `C_(2)H_(6) = 10^(7)/("Av. Const") xx` mol. Wt of `CH_(4)` <br/> `(n xx <a href="https://interviewquestions.tuteehub.com/tag/30-304807" style="font-weight:bold;" target="_blank" title="Click to know more about 30">30</a>)/("av. Const") = (10^(7) xx <a href="https://interviewquestions.tuteehub.com/tag/16-276476" style="font-weight:bold;" target="_blank" title="Click to know more about 16">16</a>)/("Av. const")` <br/> `therefore n = 5.34 xx 10^(6)`</body></html>