CHEMISTRY FINAL EXAM AND LAB PRACTICAL REVIEW SPRING QUESTIONS AND CORRECT ANSWERS 2025/2026

CHEMISTRY FINAL EXAM AND LAB PRACTICAL REVIEW SPRING QUESTIONS AND CORRECT ANSWERS 2025/2026 What is 1 mole equal to? - Answer -6.022x10²³ representative particles the amount of grams of a substance in 1 mole - Answer -molar mass N₂ + 3H₂ → 2NH₃ What is the mole ratio between N₂ and 2NH₃? - Answer -1:2 N₂ + 3H₂ → 2NH₃ What is the mole ratio between N₂ and 3H₂? - Answer -1:3 Actual yield - Answer -the amount of product formed when a reaction is carried out in the laboratory Theoretical Yield - Answer -the maximum amount of product that could be formed from given amounts of reactants N₂ + 3H₂ → 2NH₃ - Answer -Synthesis reaction 4CH₃ + 7O₂ → 6H₂O + 4CO₂ - Answer -Combustion reaction HCl + Br₂ → HBr + Cl₂ - Answer -Single Replacement reaction NaOH + HCl → H₂O + NaCl - Answer -Double Replacement reaction2MgO → 2Mg + O₂ - Answer -Decomposition reaction What do the coefficients in a balanced chemical reaction represent? - Answer -Molar quantities of substances in the chemical reaction. They allow for mole-mole ratios What is the pH of a neutral solution - An