The average speed of an ideal gas molecule at $27^{\large\circ}C$ is 0.3 m/s. Calculate the average speed at $927^{\large\circ}C$

Question

$(a)\;1.3m/s\qquad(b)\;0.6m/s\qquad(c)\;2.1m/s\qquad(d)\;1.8m/s$