Stoichiometry Fundamentals Worksheet
Grade 10 Chemistry worksheet focusing on fundamental stoichiometric calculations, including mole ratios, limiting reactants, and percentage yield.
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Stoichiometry Fundamentals
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Read each question carefully and provide clear, concise answers. Show all your work for calculations.
1. What does stoichiometry primarily deal with in chemistry?
The study of reaction rates
The quantitative relationships between reactants and products
The properties of gases
The behavior of electrons in atoms
2. In the balanced chemical equation 2H₂ + O₂ → 2H₂O, what is the mole ratio of hydrogen to water?
1:1
2:1
1:2
2:2
3. The coefficients in a balanced chemical equation represent the of moles of reactants and products.
4. The reactant that is completely consumed in a chemical reaction is called the reactant.
5. The ratio of the actual yield to the theoretical yield, multiplied by 100%, gives the yield.
6. Consider the reaction: N₂(g) + 3H₂(g) → 2NH₃(g). If you start with 2 moles of N₂ and 6 moles of H₂, how many moles of NH₃ can be produced?
7. Define 'limiting reactant' and explain its importance in stoichiometric calculations.
8. The law of conservation of mass is fundamental to all stoichiometric calculations.
True
False
9. Given the reaction: 2Al + 3Cl₂ → 2AlCl₃. If 54.0 g of Aluminum reacts with 71.0 g of Chlorine gas, determine the limiting reactant and the theoretical yield of AlCl₃ in grams. (Atomic mass: Al = 26.98 g/mol, Cl = 35.45 g/mol)