Homework Help: Chemistry

Posted by Sam on Thursday, January 27, 2011 at 10:37pm.

An unknown element Q has two known isotopes: 61Q and 62Q. If the average atomic mass is 61.4 amu, what are the relative percentages of the isotopes?

Chemistry - DrBob222, Thursday, January 27, 2011 at 10:44pm
Let x = fraction of 61Q
Then 1-x = fraction of 62Q
=============================
x*61 + (1-x)*62 = 61.4
Solve for x and 1-x, then convert to percent.

Answer this Question

Related Questions

Chemistry - An unknown element Q has two known isotopes: 60Q and 63Q. If the ...
Chemistry - An unknown element Q has two known isotopes: 60Q and 63Q. If the ...
Chemistry - The element europium exists in nature as two isotopes: 151^Eu has a ...
Chemistry - Congratulations! You have discovered a new element called Bhauzium (...
chemistry - The element copper has naturally occuring isotopes with mass numbers...
Chemistry - An element consists of two isotopes of mass 36.4681 and 43.59612 amu...
Chemistry - The atomic mass of chlorine is listed as 35.454 amu on the periodic ...
chemistry - The element rhenium (Re) has two naturally occurring isotopes, 185Re...
chemistry - The element rhenium (Re) has two naturally occurring isotopes, 185Re...
Chemistry - I am supposed to find the percent abundancies of two isotopes. I am ...

For Further Reading

First Name:
School Subject:
Answer: