A gas in a pure sample has a density of $2.62\,\text{g dm}^{-3}$ at $101000\,\text{Pa}$ and $25^{\circ}\text{C}$. Under these conditions, the gas obeys the ideal gas model. Which formula gives the $M_r$ of the gas?
- A$\frac{101000 \times 0.001}{2.62 \times 8.31 \times 25}$
- B$\frac{101000 \times 0.001}{2.62 \times 8.31 \times 298}$
- C$\frac{2.62 \times 8.31 \times 25}{101000 \times 0.001}$
- D$\frac{2.62 \times 8.31 \times 298}{101000 \times 0.001}$