B2Br6 + HNO3--------> B(NO3)3 + HBr
I think you want to balance this equation.
Balanced equation:
B2Br6 + 6 HNo3 = 2 B(No3)3 + 6 HBr
Reaction type: double replacement
Balanced equation:
B2Br6 + 6 HNo3 = 2 B(No3)3 + 6 HBr
Reaction type: double replacement