The pressure reading from a barometer is 742 mm hg. express this reading in kilopascals, kpa. (use 760 mm hg = 1.013 x 105 pa)

98.9 kPa

Explanation:

given,

Pressure reading of barometer = 742 mm Hg

we know,

760 mm Hg = 1.013 x 10⁵ Pa

                           = 0.989 x 10⁵ Pa

                          = 98.9 x 10³ Pa

                          = 98.9 kPa

the reading of the barometer is equal to  98.9 kPa

its c i just checked it

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