A sample of nitrosyl bromide (NOBr) decomposes accordingto the equation2 NOBr(g) ⇌ 2 NO(g) + Br2(g)An equilibrium mixture in a 5.00-L vessel at 100 °C contains3.22 g of NOBr, 3.08 g of NO, and 4.19 g of Br2.(a) Calculate Kc. (b) What is the total pressure exerted bythe mixture of gases? (c) What was the mass of the originalsample of NOBr?

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