Aballoon filled with helium gas occupies 2.50 l at 25°c and 1.00 atm. when released, it rises to an altitude where the temperature is 20°c and the pressure is only 0.30 atm. calculate the new volume of the balloon. enter your answer in the box provided.

8,19 L

Explanation:

The combined gas law is a equation that can be used when the initial and final conditions -pressure,volume,amount of moles,temperature-, of a gas change during a process. It can be written:

If the amount of the gas remains constant, then n1=n2 and we have:

For the problem we have:

Note: When working with gases is important to use absolute temperature values (°K, °K=°C+273,15):

P1=1 atm, V1=2,5L, T1=25+273,15=298,15°K

P2=0,3 atm, V2=?, T2=20+273,15=293,15°K

The new volume of the balloon is 8,19 L.

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