Ammonium carbamate (NH2COONH4) is a salt of carbamic acid that is found in the blood and urine of mammals. At 250. ° C, Kc = 1.58  ×  10−8 for the following equilibrium:     NH2COONH4(s) ⇌ 2 NH3(g) + CO2(g)   If 2.70 g of NH2COONH4 is put into a 0.500−L evacuated container, what is the total pressure at equilibrium?

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