Question

An old barometer hanging on the wall of a mountain hut has a reading of 27.0 inches of mercury. If 1 inch of mercury equals 0.334 atm and 1 atm = 101.3 kPa, what is the pressure reading of the barometer, in kilopascals (kPa)?

Answer 1

Answer: 914kPa (3 s.f.)

Explanation:

atm reading = $\frac{27.0}{1}$×0.334 = 9.018atm

pressure reading = $\frac{9.018}{1}$×101.3 = 913.5234kPa = 914kPa (3s.f.)