If the pressure of 125 cm3 of nitrogen gas at 100 °c decreases from 885 torr to 225torr, what is the final volume? assume temperature remains constant.

Suppose the Gas is acting ideally, Then, According to Ideal Gas Equation;

                                               P₁ V₁  =  P₂ V₂    (1)
Data Given:
                  P₁  =  885 torr

                  V₁  =  125 cm³

                  P₂  =  225 torr

                  V₂  =  ?

Puting values in eq, 1;

                                     V₂  =  P₁ V₁ / P₂

                                     V₂  =  (885 torr × 125 cm³) ÷ 225 torr

                                     V₂  =  491.66 cm³

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