Chapter 7

- Chapter 7 -SOLUTIONS TO EXERCISES1. Molar masses(a) KBr 1 K 39.10 g1 Br 79.90 g119.0(b) Na 2 SO 4 2 Na 45.98 g1 S 32.07 g4 O 64.00 g142.1 g(c) Pb(NO 3 ) 2 1 Pb 207.2 g2 N 28.02 g6 O 96.00 g331.2 g(d) C 2 H 5 OH 2 C 24.02 g6 H 6.048 g1 O 16.00 g46.07 g(e) HC 2 H 3 O 2 4 H 4.032 g2 C 24.02 g2 O 32.00 g60.05 g(f) Fe 3 O 4 3 Fe 167.6 g4 O 64.00 g231.6 g(g) C 12 H 22 O 11 12 C 144.1 g22 H 22.18 g11 O 176.0 g342.3 g(h) Al 2 (SO 4 ) 3 2 Al 53.96 g3 S 96.21 g12 O 192.0 g342.2 g(i) (NH 4 ) 2 HPO 4 9 H 9.072 g2 N 28.02 g1 P 30.97 g4 O 64.00 g132.1 g-47-