Balance the Equation(use the format of 2, 4, 1)
____Ni + _____Br2 => ____NiBr
Balance the Equation(use the format of 2, 4, 1)
____CaO => ____Ca + ____O2
Balance the Equation(use the format of 2, 4, 1)
____
Balance the Equation(use the format of 2, 4, 1)
____Fe2O3 + ____S => ____FeS + ____O2