Equation 2H2 + O2 → 2H2O
Particle Interpretation 2 molecules of hydrogen + 1 molecule of oxygen → 2 molecules of water
Mole Interpretation 2 moles of hydrogen + 1 mole of oxygen → 2 moles of water
Mass Interpretation (2 × 2.02g) of hydrogen + (1 × 32.00g) of oxygen = (2 × 18.02g) of water
Total 36.04g of reactants = 36.04 g of products
Congratulations! You have proven that mass is conserved when the chemical equation is balanced.