70j of energy are given off by a volume of gas outside system. What is the net internal change of the internal energy of this volume of gas?
The net internal change of the internal energy of the gas can be determined by using the First Law of Thermodynamics, which states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system:
ΔU = Q - W
In this case, since the gas is outside the system, the work done by the gas is zero (W = 0). Therefore, the net internal change of the internal energy of the gas is equal to the heat added to the system:
ΔU = Q
Therefore, the net internal change of the internal energy of the volume of gas is 70 j.
To determine the net internal change of the internal energy of the gas, we need to consider the energy transfer taking place. In this case, 70 joules of energy are given off by the volume of gas.
Given that the energy is given off by the gas, it implies that the internal energy of the gas is decreasing. Therefore, the net internal change of the internal energy of this volume of gas is -70 joules.