The number of moles of NO2 which contains 16g of oxygen:
Correct answer: C. 0.50
- A. 0.25
- B. 1.0
- C. 0.50
- D. 1.50
Explanation
16g grams of oxygen(O) in moles = Mass/Mr = 16/16 = 1 mole 1 mole of NO2 contains 2 moles of O (as in every 1 molecule of NO2 there are two molecules of O) Hence, 0.5 moles of NO2 will contain 1 mol of O = 16g of oxygen.
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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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