19. Pick the choice that contains 5 diatomic gases at room temperature. 1 pointH2, Br2, N2, O2, Cl2H2, F2, N2, O2, Cl2I2, Br2, N2, O2, Cl2H2, Br2, N2, O2, F2

19. Pick the choice that contains 5 diatomic gases at room temperature. 1 pointH2, Br2, N2, O2, Cl2H2, F2, N2, O2, Cl2I2, Br2, N2, O2, Cl2H2, Br2, N2, O2, F2

31. Which of the following elements DO NOT exist in diatomic form at room temperature?1 pointSulfurHydrogenNitrogenOxygenFluorineChlorineBromineIodine

A mixture of gases contains H2 and O2 gases in the ratio of 1: 4(w / w). What is the molar ratio of the two gases in the mixture?

If 2s-2p mixing is not operative then the no. of diamagnetic species among the following isBe2, B2, N2, C2, F2 4 5 3 2

What is the  ΔG° at room temperature of the reaction 2CO+O2→2CO2, if ΔH°=-128.3 kJ and   ΔS°= - 159.5 J/K ?*- 80. 769 kJ80. 769 kJ- 175.831 kJ- 124.313 kJ