Compound was found to contain nitrogen and oxygen in the ration 28 g: 80g. the formula of the compound is:
Correct answer: D. N₂O₅
- A. N₂O
- B. NO₂
- C. N₂O₃
- D. N₂O₅
Explanation
To determine the empirical formula, we need to find the simplest whole-number ratio of the atoms.Calculate the moles of each element:Nitrogen: 28g / 14g/mol = 2 molesOxygen: 80g / 16g/mol = 5 molesFind the simplest whole-number ratio:The ratio of nitrogen to oxygen is 2:5. This is already in its simplest whole-number ratio.
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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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