12g carbon combines with 64g sulfur to produce CS₂. 12g carbon also combines with 32g oxygen to form CO₂. 10g sulfur combines with 10 g oxygen to produce SO₂. These data illustrate the:
Correct answer: C. Law of reciprocal proportions
- A. Law of multiple proportions
- B. Law of definite proportions
- C. Law of reciprocal proportions
- D. Law of gaseous volumes
Explanation
This demonstrates the Law of Reciprocal Proportions. The ratio of masses of S and O that combine with a fixed mass of C is 64:32 (or 2:1). This is a simple multiple of the 1:1 ratio in which S and O combine with each other.
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Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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