For each of the following problems you must complete the following steps: 1. Balance the chemical equation (to determine mole ratios)
2. Determine the molar mass of all molecules/compounds
3. Convert the balanced chemical equation into mass (grams) for reactants and products to show the law of conservation of mass.

___ H2O2  ___O2 + ___H2O

___H2CO3 ___ H2O + ___ CO2

___HCl + ___O2  ___H2O + ___ Cl2