contestada

Calcium fluoride is 48.7% fluorine by mass. How many grams of calcium fluoride would contain 6.34 grams of fluorine?

Respuesta :

100% CaF2 -> 48% F
x CaF2 -> 6.34 gr F

6.34*100=48x
x=634/48
x= 13,20833... gr CaF2