Which of the following contains 1 mole of the stated particles?
Correct answer: B. Electrons in 1g of Hydrogen gas
- A. Chlorine molecules in 35.5g of chlorine gas
- B. Electrons in 1g of Hydrogen gas
- C. Hydrogen ions in 1 dm3 of 1 moldm-3 aqueous sulphuric acid
- D. Oxygen atoms in 22.4 dm3 of oxygen gas at STP
Explanation
1g Hydrogen is equal to one-mole hydrogen atom and each atom of hydrogen contains one electron so there will be one-mole electron.
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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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