3.0 mole of Calcium will contain _ g of Calcium.
Correct answer: B. 120 g
- A. 105 g
- B. 120 g
- C. 80 g
- D. 100 g
Explanation
Moles of Calcium = 3Molar mass of Calcium (Ca) = 40Mass of Calcium in grams = ?Moles = Mass/Molar massMass = Moles × Molar massMass = 3 x 40 → Mass 120g
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About Fundamental Concepts of Chemistry
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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