Which gas sample has the greatest pressure? Assume they are all at the same temperature. Explain.
Here, we are going to identify the gas sample having greatest pressure.
At constant temperature and volume, the pressure(p) of a gas is directly proportional to the number of moles(n).
p ∝ n
As we have seen, the number of molecules is highest in sample (c), corresponding to highest number of moles.
Thus, sample (c) has highest pressure.