At what temperature will the RMS velocity of SO2 be the same as that of O2 at 303K? (KCET 2013)

The RMS velocity of SO2 2 2 2 3 3 64 SO SO SO RT RT M Here, molar mass of SO2 = 64 g The RMS velocity of O2 2 2 3 3 303 32 O O RT R M x Molar mass of O2 = 32 g 2 3 3 303 64 32 SO RT Rx >> 2 303 64 32 SO T x >> 2 606 SO T K