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KCET2008ChemistrySome Basic Concepts of Chemistry

80 ~g of oxygen contains as many atoms as in

Options

  1. A80 ~g of hydrogen
  2. B1 ~g of hydrogen
  3. C10 ~g of hydrogen
  4. D5 ~g of hydrogen

Correct answer

D. 5 ~g of hydrogen

Step-by-step solution

Number of moles of oxygen = 80 16 Number of atoms of oxygen = 80 16 N ₀ 2 =5 N ₀ 2 Number of moles of 5 ~g of hydrogen = 5 1 Number of atoms in 5 ~g of hydrogen =5 N ₀ 2 Hence, the number of atoms in 80 ~g of oxygen is equal to the number of atoms in 5 ~g of hydrogen.

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