A hemoglobin molecule is how many times heavier than a helium atom?
Correct answer: B. 17,000 times
- A. 68,000 times
- B. 17,000 times
- C. 34,000 times
- D. 1,700 times
Explanation
To find the relative mass, divide the molecular weight of hemoglobin (~68,000 amu) by the atomic mass of helium (~4 amu). The ratio is 68,000 / 4 = 17,000.
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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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