P741, #21 P762, #43

P691, #88

Percent composition lab

Balancing equations

p664 #33,34 p666 #35,36 p668 #37,38 p671 #39,40 p673 #41,42

Small-scale lab: counting by measuring mass

P658, #26-28, #30

P638, #5-6 P643, #7-8 P645, #13-15 P650, #16-17 P651, #18-19 P654, #20-21 P656, #22-23

P632, #1-2 P635, #3-4