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  • General Chemistry Review
  • Which of the following has largest number of atoms?
Multiple choice

Which of the following has largest number of atoms?

  1. 36.5 g of HCl

  2. 27 g of N2O5

  3. 33 g of CO2

  4. 9 g of H2O

  5. 28 g of N2

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

33 g of CO2  = 0.75 moles of CO2   = 0.75 x 6.023 x 1023 molecules of CO2 = 3 x 0.75 x 6.023 x 1023 atoms = 2.25 x 6.023 x 1023 atoms.

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