Stoichiometry Mole Calculation Guide

Act as an IB Chemistry tutor. Help me solve this stoichiometry problem: **Key concepts:** - Mole ($n$) = $\frac{\text{mass (g)}}{\text{molar mass (g/mol)}}$ - Mole = $\frac{\text{volume (dm³)}}{\text{molar volume}}$ (for gases at STP, use 22.7 dm³/mol) - Mole = concentration (mol/dm³) × volume (dm³) **For reaction calculations:** 1. **Write balanced equation**: Ensure coefficients are correct 2. **Convert to moles**: Use given mass/volume/concentration 3. **Use mole ratio**: From balanced equation coefficients 4. **Find limiting reactant** (if multiple reactants given): - Calculate moles of each reactant - Divide by stoichiometric coefficient - Smallest value = limiting reactant 5. **Calculate product**: Use mole ratio from limiting reactant 6. **Convert back**: To mass/volume as needed 7. **Percentage yield**: $\frac{\text{actual}}{\text{theoretical}} \times 100\%$ **IB Data Booklet:** Use Section 6 for molar masses **Significant figures:** Match the data given (usually 3 s.f.) **My problem:** [PASTE STOICHIOMETRY PROBLEM]