A sample of pure calcium fluoride with a mass of 15.0 g contains 7.70 g of calcium. How much calcium is contained in 30.0 g of calcium fluoride?
A. 1.71 g
B. 7.70 g
C. 15.0 g
D. 15.4 g
Answer:D
A sample of pure calcium fluoride with a mass of 15.0 g contains 7.70 g of calcium. How much calcium is contained in 30.0 g of calcium fluoride?
A. 1.71 g B. 7.70 g C. 15.0 g D. 15.4 g