A 9.53-g sample of impure CsF was dissolved in 100 mL water. The sample was mixed with excess aqueous calcium nitrate solution to precipitate insoluble calcium fluoride. The precipitate was filtered, dried, and weighed. A total of 2.10 g calcium fluoride was collected. What was the percentage of CsF in the original sample?
Can someone please walk me through how to do this problem and provide a correct answer?