For a better understanding of the Ideal Gas Equation, let us mention the four gas variables and one constant. Pressure (P), Volume (V), Number of Moles (n), and Temperature (T) are the four gas variables (T). Finally, R, often known as the Gas constant, is a constant in the equation presented below.
To an evacuated vessel with a movable piston under a total pressure of 1 atm, 0.1 mol of He and an unknown compound (vapour pressure 0.68 atm at 0℃) are introduced. Considering the ideal gas behaviour, the total volume (in litre) of the gases at 0℃ is close to:
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Principal, Babu Daudayal SVM, Mathura