What is the minimum temperature and pressure required for the CO2 to become supercritical?

If PN₂,i = 0.79 atm and Pozi = 0.21 atm calculate the partial pressure of NO, N₂ and O₂ at equilibrium given K = 1 x 10-5. : 2 N₂(g) + O₂(g) → 2 NO(g)

The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of sodium azide, which produces large volumes of nitrogen gas. 1. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid sodium azide (NaN) into solid sodium and gaseous dinitrogen. 2. Suppose 84.0 L of dinitrogen gas are produced by this reaction, at a temperature of 19.0 °C and pressure of exactly 1 atm. Calculate the mass of sodium azide that must have reacted. Round your answer to 3 significant digits. 미미

In liquid ammonia, NaH and NH3 react to form sodamide (NaNH2).  What happens when NaNH2 is placed in water? Use at least one balanced chemical equation in your explanation.