A mixture containing nitrogen, hydrogen, and iodine established the following equilibrium at 400 °C:2NH3 (g) + 3I2 (g) ⇌ N2(g) + 6HI(g) Use the information below to calculate Kc for this reaction. N2 (g) + 3H2 (g) ⇌ 2NH3 (g) Kc1 = 0.50 at 400 °CH2 (g) + I2 (g) ⇌ 2HI(g) Kc2 = 50 at 400 °C

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

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qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.