An atom has 31 electrons 39 neutrons and 31 protons. it follows that its mass number is​

If a reactant was removed, did the new equilibrium system shift to make more reactants or more products?

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For the reaction i2(g)+br2(g)←−→2ibr(g), kc=280 at 150 ∘c. suppose that 0.450 mol ibr in a 2.00-l flask is allowed to reach equilibrium at 150 ∘c. what is the equilibrium concentration of 2ibr, i2, br2