The Tools Of Chemistry Worksheets With Answer Key Page 4
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9Chapter 1 — Tools of Chemistry
Page 4
1-20. The temperature of a hot tub or spa is 104 ˚F. What is this temperature in ˚C?
(a)
58 ˚C
(b)
76 ˚C
(c)
40. ˚C
(d)
52 ˚C
1-21. The temperature of molten aluminum is 683 ˚C. What is this temperature in degrees
Kelvin?
(a)
363 K
(b)
410. K
(c)
651 K
(d)
956 K
1-22. If the temperature of dry ice is -78 ˚C, what is its temperature in degrees Kelvin?
(a)
351 K
(b)
-195 K
(c)
195 K
(d)
241 K
1-23. The number of significant figures in the number 0.002354 is
(a)
6
(b)
3
(c)
2
(d)
4
-3
1-24. The number of significant figures in the number 1.03 x 10
is
(a)
1
(b)
3
(c)
2
(d)
4
1-25. If you solve the expression (2.34 + 0.567 + 63.2 = ?), the answer is
(a)
66.107
(b)
66.10
(c)
66.1
(d)
66
1-26. What is the answer to the following expression in the correct number of significant figures?
(0.0821) • (0.023) • (298) / 1.5
(a)
0.38
(b)
0.4
(c)
0.375
(d)
0.37514227
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