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May 29, 2015

Homework Help: Chemistry

Posted by Tammy on Monday, October 22, 2007 at 10:34pm.

I am completely lost in chemistry. Everything the teacher says sounds like a different language to me and I am usually really good in the class. Can someone help me do this problem please?

An element "E" is present as 10E (The 10 is like an exponent to the left of the E) with a mass volume of 10.01 amu, and as 11E (again, like an exponent)with as mass value of 11.01 amu. The natural abundances of 10E and 11E are 19.78% and 80.22% respectively. What is the average atomic mass of the element? What is the element.

I don't even know where to start. The parentheses are my own explanation of what the numbers on the sheet actually looks like.

Please help!

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