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When baking soda is heated it decomposes according to the following reaction: 2 NaHCO3(s)⇌Na2CO3(s) + H2O(g) + CO2(g) If sufficient baking soda is placed in a container and heated to 90°C, the total pressure of the gases is 0.5451 atm. What is the value of Kp at that temperature? A) 0.4228 B) 0.2973 C) 0.07428 D) 1.091