Step-by-step explanation:
Word Equation;
Reactants; Solid magnesium carbonate and hydrogen bromide
Products: Carbon dioxide, liquid water and magnesium bromide
Solid magnesium carbonate + hydrogen bromide --> Carbon dioxide + liquid water + magnesium bromide
Skeleton Equation:
MgCO3 (s) + HBr (aq) → MgBr2 (aq) + CO2 (g) + H2O (l)
Balanced Chemical Equation;
MgCO3 (s) + 2 HBr (aq) → MgBr2 (aq) + CO2 (g) + H2O (l)