An atomic mass unit is equivalent to _ the mass of a carbon-12 isotope.
Correct answer: B. 1/12th
- A. 12 times
- B. 1/12th
- C. 1/6th
- D. 6 times
Explanation
By international definition, one atomic mass unit (amu) is exactly equal to 1/12th of the mass of a single, neutral atom of the carbon-12 isotope.
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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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