Answers to Chapter 1

34  There are numerous correct answers.  Find a difference in physical properties which you can exploit to separate the components of the mixture.
	a.  Use a magnet to pull out the iron. (used in recycling operations)
        b.   Add water--the sugar dissolves and the sand is left of the bottom.
        c.  Gasoline floats on the surface of water and can be carefully sucked off.
        d.  Filter the gold flakes out or allow them to sink (traditional gold mining)

36	a  1.73 x 1017 Watts
	b    1 x 10-5 m
	c    1.6

40		a	75  2 sf(the solutions manual seems to have an extra 10-3 in the numerator)
		b   2sf 6.3 x 1012 
		c  2 sf 4.6 x 103 2sf
        	d   4 sf 1.058 x 10-1

48.   				a	670 mg
				b  9.5 mg asp/kg body weight
				c  680 days

56.  Absolute zero in degrees F is -459.67 which is higher than the desired temperature. So the answer is NO.

58. 102 mL (I get 101 mL to 3 sf)

68. 0.9 L chlorine solution

72.	6x107 m3 seawater

76.	96.4 mL water