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How many grams are in 1.50 moles of bromine liquid?

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

Amixture initially contains a, b, and c in the following concentrations: [a] = 0.300 m , [b] = 1.05 m , and [c] = 0.550 m . the following reaction occurs and equilibrium is established: a+2b⇌c at equilibrium, [a] = 0.140 m and [c] = 0.710 m . calculate the value of the equilibrium constant, kc.

Areaction in which products can react to re-form reactants is