The number of moles of CO2 which contain 16 g of oxygen:
Correct answer: B. 0.50
- A. 0.25
- B. 0.50
- C. 1.00
- D. 1.50
Explanation
Option B is correct.The number of moles of CO2 which contain 16 g of oxygen is 0.5 moles. This is because each molecule of CO2 contains 2 oxygen atoms, and 16 g of oxygen is equivalent to 0.5 moles of oxygen. So, 0.5 moles of CO2 will contain 16 g of oxygen. The equation for the formation of CO2 is: C + O2 → CO2 where: C is carbon, O2 is oxygen gas and CO2 is carbon dioxide The molar mass of CO2 is carbon dioxide The molar mass of CO2 is 44 g/mol, and the molar mass of oxygen is 16 g/mol. So, 0.5 moles of CO2 will contain 16 g of oxygen. Therefore, the number of moles of CO2 which contain 16 g of oxygen is 0.5 moles.
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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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