Find the density of oxygen at 7 ° C if its pressure is 200 kPa.

univerkov | December 17, 2020 | education

We are given: P = 200kPa = 2 * 10 ^ 5Pa T = 7C = 280K R = 8.31
M = 32 * 10 ^ 3kg / mol pV = (mRT) / M p = (mRT) / MV m = pv p = (pVRT) / MV = (pRT) / M pM = pRT => p = (pM) / (RT) = (2 * 10 ^ 5 * 32 * 10 ^ 3) / (8.31 * 280) = 2.72 * 10 ^ 6 kg / m ^ 3
Answer: 2.72 * 10 ^ 6 kg / m ^ 3

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