i need help w/ my pre chem. homework! PLEASE HELP ME!! (:?

Question

ok so i was assigned 12 problems for homework but i can't remember how to do them..can u do one problem for me and explain the steps? THANKS SOOO MUCH!! This is 9th grade pre chemistry


ok the question is...

A sample of an unknown compound with a mass of 0.847 g has the following composition: 50.01 percent fluorine and 49.49 percent iron. When this compound is decomposed into its elements, what mass of each element would be recovered?

Answer 1

Multiply 0.5001 by 0.847 to get the F. The rest is Fe.

0.847 x .5001 = F
0.847 x .4949 = Fe