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NEET2025ChemistrySome Basic Concepts of ChemistryActual

Among the following choose the ones with equal number of atoms. A. 212 g of Na ₂ CO ₃( ~s ) [molar mass =106 ~g ] B. 248 g of Na ₂ O (s) [molar mass =62 ~g ] C. 240 g of NaOH ( s ) [molar mass =40 ~g ] D. 12 g of H ₂( ~g ) [molar mass =2 ~g ] E. 220 q of CO ₂( q ) [molar mass .=44 ~g ] Choose the correct answer from the options given below:

Options

  1. AA, B and C only
  2. BA, B and D only
  3. CB, C and D only
  4. DB, D and E only

Correct answer

B. A, B and D only

Step-by-step solution

No. of atoms = Atomicity mole N _ A (A) No. of atoms =6 212 106 N _ A =12 ~N _ A (B) No. of atoms =3 248 62 N _ A =12 ~N _ A (C) No. of atoms =3 240 40 N _ A =18 ~N _ A (D) No. of atoms =2 12 2 N _ A =12 ~N _ A (E) No. of atoms =3 220 44 N_A=15 N_A

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