139233 The molecules of a given mass of gas have a root mean square velocity of $200 \mathrm{~m} \mathrm{~s}^{-1}$ at $27^{\circ} \mathrm{C}$ and $1.0 \times 10^{5} \mathrm{~N} \mathrm{~m}^{-2}$ pressure. When the temperature is $127^{\circ} \mathrm{C}$ and the pressure is $0.5 \times$ $10^{5} \mathrm{Nm}^{-2}$, the root mean square velocity in $\mathrm{ms}^{-}$ 1 , is
139233 The molecules of a given mass of gas have a root mean square velocity of $200 \mathrm{~m} \mathrm{~s}^{-1}$ at $27^{\circ} \mathrm{C}$ and $1.0 \times 10^{5} \mathrm{~N} \mathrm{~m}^{-2}$ pressure. When the temperature is $127^{\circ} \mathrm{C}$ and the pressure is $0.5 \times$ $10^{5} \mathrm{Nm}^{-2}$, the root mean square velocity in $\mathrm{ms}^{-}$ 1 , is
139233 The molecules of a given mass of gas have a root mean square velocity of $200 \mathrm{~m} \mathrm{~s}^{-1}$ at $27^{\circ} \mathrm{C}$ and $1.0 \times 10^{5} \mathrm{~N} \mathrm{~m}^{-2}$ pressure. When the temperature is $127^{\circ} \mathrm{C}$ and the pressure is $0.5 \times$ $10^{5} \mathrm{Nm}^{-2}$, the root mean square velocity in $\mathrm{ms}^{-}$ 1 , is
139233 The molecules of a given mass of gas have a root mean square velocity of $200 \mathrm{~m} \mathrm{~s}^{-1}$ at $27^{\circ} \mathrm{C}$ and $1.0 \times 10^{5} \mathrm{~N} \mathrm{~m}^{-2}$ pressure. When the temperature is $127^{\circ} \mathrm{C}$ and the pressure is $0.5 \times$ $10^{5} \mathrm{Nm}^{-2}$, the root mean square velocity in $\mathrm{ms}^{-}$ 1 , is