There are two open cans of soda on the table. one can was just taken from the refrigerator and the other was taken from the cupboard. upon opening the cans, which one loses carbon dioxide more quickly and why

The one in the cupbard looses its CO2 first as its warmer so its solution has a lower solibility to the CO2 gas 

at lower temperatures the CO2 has less energy to escape from the solution of soda as CO2 in a solution is unstable it wants to be released 

hope that helps 

D-no effect on the rate