Essential Chemistry for IGCSE - Chemical Calculations (Section 7 - No. 35)
Two flasks, each containing the same gas, are at the same temperature and pressure. What must be the same about the gases in the flasks?
The mass of the gas.
The volume of the gas.
The number of moles of the gas.
The identity of the gas.
Explanation
At the same temperature and pressure, equal volumes of different gases contain the same number of moles.
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