Question

A 5.0 g sample of calcium nitrate (Ca(NO3)2, M = 164) contaminated with silica (SiO2, M = 60.1) is found to contain 1.0 g calcium. What is the mass percent purity of calcium nitrate in the sample?

(A) 20% (B) 24% (C) 73% (D) 82%


Comments
  • c raquel commented over 1 year ago