The number of moles in 0.1kg of calcium is:
Correct answer: D. 2.5 mole
- A. 0.0025 mole
- B. 0.25mole
- C. 0.025 mole
- D. 2.5 mole
Explanation
0.1kg is equal to 100g hence 10g of Calcium present 1mole of Ca => 40g of Ca xmole of Ca => 100g of Ca x= 2.5moles of Ca
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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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