Mass of caf2 = 235 g Molar Mass of Caf2 = 78.07 g/mol
Number of mole for Caf2 = 225g x 1 mole / 78.07 = 2.88 Mole Caf2 = 2F
2.88 mol Caf2 x 2 Mol f / Mole Caf2 = 5.76 Mole F Mass of F = 5.76 x 19.0 ( Mass number of F ) = 110g so F = 110g in 235g of Cafs Hope this Help Let me know if you have any questions
