4. Consider three 1-L flasks at the same temperature and pressure. Flask A contains CO gas, flask B contains N
2 gas, and flask C contains O
2 gas.
In which flask do the molecules have the greatest momentum per impact?
(A)The molecules in all the flasks have the same momentum per impact.
(B) The molecules in two of the flasks have the same momentum per impact.
(C) flask C
(D)flask A
(E) flask B
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