Posted by Riana on Wednesday, December 26, 2012 at 1:47pm.
Let f = fraction of x-56,
then 1-f = fraction of x=59
----------------------------
56f + 59(1-f) = 57.3
solve for f and 1-f and convert each to percent.
Note: (we could have said f = % of 56 and 100-f - % of 59 but then we would have to multiply 57.3 by 100 and solve for f and 100-f; the answer would have been directly in percent.)
Related Questions
Calculating Averages? - A certain element has four isotopes. 5.85% of has a mass...
chemistry - 1.what is meant by atomic number of an element? 2.the mass number of...
honors chemistry- isotopes... - can scientists actually measure the mass and ...
math - what is the specific gravity of a substance that has a density of 1.59 g/...
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 - An unknown element Q has two known isotopes: 61Q and 62Q. If the ...
Chemistry - An element consists of two isotopes of mass 36.4681 and 43.59612 amu...
Chemistry - I need to find the average molar mass of an unknown element. The ...
Chemistry - I need to find the average molar mass of an unknown element. The ...
For Further Reading
