Answer :
Given from the combined gas law that PV/T = k, there, therefore, the number of moles of the gas is constant.
What is the combined gas law?
According to the combined gas law, the product of the pressure and volume divided by the temperature is a constant. That is; PV/T = k
Looking at this statement we can see that the implied assumption in this law is that the number of moles of the gas is constant.
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