5. i) Using the ideal gas law, find the number of air molecules per unit volume...
5. i) Using the ideal gas law, find the number of air molecules per unit volume in air at 25 ◦ C and atmospheric pressure.
ii) Assuming air to be 80 % N2 and 20 % O2, show that the average molecular weight of dry air is around 28.8 grams per mol.
iii) Combine this with the result from part i) to calculate the density of dry air at 25 ◦ C.
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5. i) Using the ideal gas law, find the number of air molecules
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