Chemistry
posted by kathryn .
Hello, I am looking just for someone to tell me how I go about doing this problem, ie. the formula that i would need to know for it. I would really like to figure it out on my own but I'm not sure how to.
The mass ratio of Kr to F in a particular compound is 2.206:1. How many grams of krypton are present if the compound contains 57.8 grams of F?

(Kr/F) = (2.206/1) = (x grams Kr/57.8 g F)
Solve for x grams Kr.