February 19, 2017

Homework Help: Chemistry

Posted by Melissa on Sunday, September 12, 2010 at 2:44pm.

I am really having trouble answering this question, can someone help?

A binary compound between an unknown element E and hydrogen contains 91.27% E and 8.73% H by mass. If the formula of the compound is E3H8, calculate the atomic mass of E.

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