Workshop CHE 166
Answers for
Problem Set #1
 

1.

a) physical
b) chemical
c) physical
d) chemical

2.

a) mixture
b) compound
c) compound
d) mixture
e) element

3. joule, J ; millijoule, mJ

4. 5 mL

5. 1 x 10^-1 nm

6. 39.37007874... in

7. 0.450 Mg

8.

a) 1 x 10⁶ m²/km²
b) 1 dm³/L

9. 1 x 10⁶ cm³

10.

a) 3.0 x 10⁵ km/s
b) 1.1 x 10⁹ km/hr
c) 1.1 x 10¹⁵ mm/hr

11. 3 ; 7.21 x 10^-3

12. 7 ; 9.604870 x 10²

13. 2.02

14. 4

15. 1

16. 1.669748... Þ  1.67; 3 sf; 2 dp

17. 0.83501... Þ  0.84; 2 sf; 2 dp

18. 4.03 g/cm³

19. 180 g

20. 9.01 cm³

21. 13 km/L

22. 30.2 cents/L

23. 50 ^oC ; 323 K

24. - 28.1 ^oF ; 239.8 K

25. 3 ; 5

26. 10 g

27. 2.1 x 10⁹ kg

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