1250kj of energy are transfered out of of a box of gas in to the lower temperature room that it placed in. The gas has 840kj work done to it. How much internal energy did gas gain or lose?
To find the change in internal energy of the gas, we need to consider the energy transferred and the work done on the gas.
The energy transferred out of the gas is 1250 kJ (transfer out of the box).
The work done to the gas is 840 kJ (work done on the gas).
Since energy is conserved, the change in internal energy is equal to the sum of the energy transferred out and the work done on the gas:
Change in internal energy = Energy transferred out + Work done on the gas
Change in internal energy = 1250 kJ + 840 kJ
Change in internal energy = 2090 kJ
Therefore, the gas gained 2090 kJ of internal energy.
To determine the change in internal energy of the gas, we need to consider the energy transferred into and out of the gas.
The energy transferred out of the gas to the lower temperature room is 1250 kJ. This represents a decrease in the internal energy of the gas.
The work done on the gas is 840 kJ. Work done on the gas usually leads to an increase in its internal energy.
Since the energy transferred out of the gas is greater than the work done on the gas, we can conclude that the gas lost more energy than it gained. Therefore, the gas experienced a net loss in internal energy.
To calculate the change in internal energy, we subtract the work done on the gas from the energy transferred out of the gas:
Change in Internal Energy = Energy Transferred Out - Work Done On
Change in Internal Energy = 1250 kJ - 840 kJ
Change in Internal Energy = 410 kJ
Therefore, the gas lost 410 kJ of internal energy.