Correct representation of element with atomic number and atomic mass is:
Correct answer: A. Option A
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation
Option A represents the atomic mass ("A") above and the atomic number ("Z") below. The atomic mass is the total number of protons and neutrons in the nucleus, and the atomic number is the number of protons. This representation correctly places the atomic mass above the atomic number.
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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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