A chemical formula that shows the actual kinds and numbers of atoms present in one molecule of a compound is called the:
Correct answer: B. Molecular formula
- A. Empirical formula
- B. Molecular formula
- C. Ionic formula
- D. Covalent formula
Explanation
The molecular formula gives the exact number of atoms of each element in a single molecule of a substance. It represents the true composition of the molecule, unlike the empirical formula which only gives the simplest ratio.
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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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