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Question 600094
JEE Chemistry · Medium

Mole Concept and Stoichiometry: Mole–Mass Conversion MCQ

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Mole–Mass ConversionMediumQuestion 600094

Question

How many moles of O atoms are in 0.5 mol of K₂Cr₂O₇?
  1. A
    0.5 mol
  2. B
    1.75 mol
  3. C
    3.5 mol
    Correct
  4. D
    7 mol

Correct answer

3.5 mol

Explanation

K₂Cr₂O₇ has 7 oxygen atoms per formula unit. 0.5 mol × 7 = 3.5 mol O atoms.

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