A gas mixture contains oxygen, nitrogen and argon, and the total pressure is $500\text{ kPa}$. The mixture contains a total of $1.2$ moles of gas. If the oxygen gas by itself filled the whole volume of the mixture, it would produce a pressure of $150\text{ kPa}$. Under room conditions, the quantity of nitrogen gas in the mixture would take up a volume of $5.76\text{ dm}^3$. What is the partial pressure of the argon gas in the mixture?
- A$150\text{ kPa}$
- B$200\text{ kPa}$
- C$250\text{ kPa}$
- D$300\text{ kPa}$