(a) At 1285 °C the equilibrium constant for the reaction . A 0.200-L vessel containi...

(a) At 1285 °C the equilibrium constant for the reaction . A 0.200-L vessel containing an equilibrium mixture of the gases has 0.245 g Br2(g) in it. What is the mass of Br(g) in the vessel? (b) For the reaction , at 700 K. In a 2.00-L flask containing an equilibrium mixture of the three gases, there are 0.056 g H2 and 4.36 g I2. What is the mass of HI in the flask?