ON16 P42 Q2 Molecule Volume and Mean Distance | Oct/Nov 2016 | Cambridge A Level 9702 Physics
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9702/42/O/N/16: (a) The equation of state for an ideal gas of volume V at pressure p is pV = nRT where R is the molar gas constant. State what is meant by (i) the symbol n, (ii) the symbol T.
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(b) An ideal gas is held in a container of volume 2.4 × 10^3 cm3 at pressure 4.9 × 105 Pa. The temperature of the gas is 100 °C. Show that the number of molecules of the gas in the container is 2.3 × 10^23.
(c) Use data from (b) to estimate the mean distance between molecules in the gas.
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