Given concentration equilibrium constants (1) h3o +(aq) + noâ 2 (aq) ââ½ hno2(aq) + h2o, kc = 3.86 ã 103 , (2) 2 h2o(â) ââ½ h3o +(aq) + ohâ(aq), kw = 1.0 ã 10â14 , calculate kc for the reaction noâ 2 (aq) + h2o(â) ââ½ hno2(aq) + ohâ(aq).

You are performing an experiment in a lab to attempt a new method of producing pure elements from compounds. the only problem is that you do not know what element will form. by your previous calculations you know that you will have 6.3 moles of product. when it is complete, you weigh it and determine you have 604.4 grams. what element have you produced?

Which statement accurately describes the relationship between air pressure, air density, or altitude? as altitude increases, pressure increases.as altitude increases, air density increases.air pressure and density are lowest at sea level.denser air exerts more pressure than less dense air.

How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.