Which of the following equations is true for $8.8 \times 10^{-2} \mathrm{~kg}$ of carbon dioxide gas?

Which from following gases of same mass exerts highest pressure at constant temperature?

A neon-dioxygen mixture contains $$64 \mathrm{~g} \mathrm{~O}_2$$ and $$160 \mathrm{~g} \mathrm{~Ne}$$. If the total pressure is $$25 \mathrm{~bar}$$, calculate the partial pressure of dioxygen.

Find the temperature in degree Celsius if volume and pressure of 2 mole ideal gas is $$20 \mathrm{~dm}^3$$ and $$4.926 \mathrm{~atmospheres}$$ respectively. ($$\mathrm{R}=0.0821 \mathrm{~dm}^3 \mathrm{~atm} \mathrm{~K}^{-1} \mathrm{~mol}^{-1})$$