A sample of nitrosyl bromide (NOBr) decomposes according to the equation 2 NOBr1g2 Δ 2 NO1g2 + Br21g2 An equilibrium mixture in a 5.00-L vessel at 100 C contains 3.22 g of NOBr, 3.08 g of NO, and 4.19 g of Br2. (c) What was the mass of the original sample of NOBr?

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