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b) The pressure gauge on an oxygen cylinder in a hospital shows a value of 250kPa at about 1525m above sea level where the pressure is 84.3kPa, what is the absolute pressure of the oxygen? [Answer: 334.3kPa] C) What is the weight of oxygen in the cylinder (see question 2.b) if its internal diameter and length in the hospital are 20cm and 1.5m respectively and the density of oxygen at atmospheric pressure at sea level is 1.27 kg/m3? Assume all measurements taken at 20 C. [Answer: 1.94N]