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NEETChemistrySome Basic Concepts of Chemistry

Match List-I with List-II. List-I (Mass of gas) List-II (Number of molecules) (A) 8.0 g of O ₂ (I) 0.5 ~N _ A (B) 14.0 g of N ₂ (II) 1.5 ~N _ A (C) 3.0 g of H ₂ (III) 1.0 ~N _ A (D) 44.0 g of CO ₂ (IV) 0.25 ~N _ A Choose the correct answer from the options given below:

Options

  1. A(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
  2. B(A)-(I), (B)-(IV), (C)-(II), (D)-(III)
  3. C(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
  4. D(A)-(IV), (B)-(I), (C)-(III), (D)-(II)

Correct answer

A. (A)-(IV), (B)-(I), (C)-(II), (D)-(III)

Step-by-step solution

Number of moles = Given mass Molar mass Number of molecules = Number of moles N _ A (A) 8.0 g of O ₂ : Moles = 8.0 32 = 0.25 Molecules = 0.25 ~N _ A (B) 14.0 g of N ₂ : Moles = 14.0 28 = 0.5 Molecules = 0.5 ~N _ A (C) 3.0 g of H ₂ : Moles = 3.0 2 = 1.5 Molecules = 1.5 ~N _ A (D) 44.0 g of CO ₂ : Moles = 44.0 44 = 1.0 Molecules = 1.0 ~N _ A Therefore, the correct matching is (A)-(IV), (B)-(I), (C)-(II), (D)-(III). Answer: (A)-(IV), (B)-(I), (C)-(II), (D)-(III)

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