The number of moles of NO2 which contains 16 g of Oxygen:
Correct answer: A. 0.5
- A. 0.5
- B. 0.60
- C. 1.0
- D. 1.50
Explanation
The molar mass of NO2 is approximately 46.01 g/mol. This means that one mole of NO2 weighs 46.01 grams. Now, to find the number of moles of NO2 in 16 g of oxygen (O2), we'll use the molar mass of O2, which is approximately 32.00 g/mol. Number of moles of O2 = Mass of O2 (in grams) / Molar mass of O2 Number of moles of O2 = 16 g / 32.00 g/mol Number of moles of O2 = 0.5 moles Since NO2 contains one oxygen atom, the number of moles of NO2 will be the same as the number of moles of O2, which is 0.5 moles. So, 16 g of oxygen (O2) contains 0.5 moles of NO2.
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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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