Balloon X is filled with the carbon monoxide. Balloon Y is filled to the same volume with carbon dioxide. The balloons are left for several days in a room at constant temperature. Which balloon would you expect to be smallest after this period of time?
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The rate of effusion through the balloon walls is inversely proportional to the molar masses. In simpler terms, a lower molar mass means the gas escapes faster. Therefore, the CO (molar mass 28) will squeeze through the balloon pores faster than the CO2(molar mass 44).
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