| Unit Conversions | |
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Example 1
The pressure reading from a barometer is 742 mm Hg. Express this reading in kilopascals, kPa.
Solution
This conversion may be performed using two conversion factors:
760 mm Hg = 1.013 x 105 Pa
1 kPa = 103Pa
742 mm Hg x 1.013 x 105 Pa / 760 mm Hg x 1 kPa / 103 Pa = 98.9 kPa
Answer
98.9 kPa
Always ask yourself whether your final answer seems reasonable. Atmospheric pressure is usually close to 100 kPa, so an answer of 98.9 kPa is reasonable.
First page > Sample Problem #1 > Page 1, 2, 3
