139300 The molecules of a given mass of a gas have r.m.s. velocity of $200 \mathrm{~ms}^{-1}$ at $27^{\circ} \mathrm{C}$ and $1.0 \times 10^{5}$ $\mathrm{Nm}^{-2}$ pressure. When the temperature and pressure of the gas are respectively, $127^{\circ} \mathrm{C}$ and $0.05 \times 10^{5} \mathrm{Nm}^{-2}$ the rms velocity of its molecules in $\mathrm{ms}^{-1}$ is
139300 The molecules of a given mass of a gas have r.m.s. velocity of $200 \mathrm{~ms}^{-1}$ at $27^{\circ} \mathrm{C}$ and $1.0 \times 10^{5}$ $\mathrm{Nm}^{-2}$ pressure. When the temperature and pressure of the gas are respectively, $127^{\circ} \mathrm{C}$ and $0.05 \times 10^{5} \mathrm{Nm}^{-2}$ the rms velocity of its molecules in $\mathrm{ms}^{-1}$ is
139300 The molecules of a given mass of a gas have r.m.s. velocity of $200 \mathrm{~ms}^{-1}$ at $27^{\circ} \mathrm{C}$ and $1.0 \times 10^{5}$ $\mathrm{Nm}^{-2}$ pressure. When the temperature and pressure of the gas are respectively, $127^{\circ} \mathrm{C}$ and $0.05 \times 10^{5} \mathrm{Nm}^{-2}$ the rms velocity of its molecules in $\mathrm{ms}^{-1}$ is
139300 The molecules of a given mass of a gas have r.m.s. velocity of $200 \mathrm{~ms}^{-1}$ at $27^{\circ} \mathrm{C}$ and $1.0 \times 10^{5}$ $\mathrm{Nm}^{-2}$ pressure. When the temperature and pressure of the gas are respectively, $127^{\circ} \mathrm{C}$ and $0.05 \times 10^{5} \mathrm{Nm}^{-2}$ the rms velocity of its molecules in $\mathrm{ms}^{-1}$ is
139300 The molecules of a given mass of a gas have r.m.s. velocity of $200 \mathrm{~ms}^{-1}$ at $27^{\circ} \mathrm{C}$ and $1.0 \times 10^{5}$ $\mathrm{Nm}^{-2}$ pressure. When the temperature and pressure of the gas are respectively, $127^{\circ} \mathrm{C}$ and $0.05 \times 10^{5} \mathrm{Nm}^{-2}$ the rms velocity of its molecules in $\mathrm{ms}^{-1}$ is