The Mathematics of Chemistry
KEY
Chemistry: The Mathematics of Chemistry
Complete the following calculations. Include units on your answers.
1. (127 m)
(23 s)
2. (5.22 m) (4.29 m)
3. 34 cm + 21 cm + 8 cm
4. (0.45 mm) (0.28 mm) (0.85 mm)
5. (10 kg) (30 m)
(5 s)
6. 1.3 moles
3.4 L
7. (75 kg) (5.25 m)
(2.5 s) (6.3 s)
8. (56 N) (2.5 m)
9. (1.27 J + 0.22 J)
(116 g) (4.8oC)
10. (7.54 N) (0.246 m)
(0.672 s)
11. (8.13 kg)
(0.452 cm) (0.550 cm)
12. 54.0 g
4.10 L
13. 26 008 J
125 g
14. (645 atoms) (2.00)
Simplify the following expressions.
15. 5 (5w – 4w)
10
16. 1304 x 7.631 x 4.000
(521.2) (0.4998)
17. 6a x 5b2
3a3
18. (3.28d) (4.83d) (0.250)
19. (2a – 3b) (3b)
(3c) (c)
20. (4f + 13g) (2w)
Solve each of the following expressions for x. (x = ??)
21. 2x – 14 = 8
22. 4x – 2z = 3y + 8 (if y = 12 and z = –3)
23. H = WQx
24. x + 12 = 23FG
25. 18KRx = E
F2
26. T = LxS
27. 15G – x = U
28. Y = T + 6
x
29. B2H5x = T3K
E4R Y
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