Question

the number of atoms present in 0.5 g atom of nitrogen is same as the atoms inA. 12g of CB. 32 g of SC. 8g of oxygenD. 24g of Mg

Answer 1

There is no correct option out of A, B, C, D.

And I believe that you have committed a little mistake when noting down the Question.
If we replace Nitrogen with Hydrogen in the Question,

The Correct Answer Will be C. 8g of Oxygen

Because, Moles of Hydrogen in 0.5 g of Hydrogen = 0.5 moles

and Moles of Oxygen in 8g of Oxygen = 8/16 = 0.5 moles

Answer 2

Hello Dear.

Here is the answer---


→→→→→→→→→

Given,

Mass of the Nitrogen = 0.5 grams.
Atomic Mass of the Nitrogen = 14 grams.

Using the Formula,

  Number of atoms = (Mass/Atomic Mass) × Avogadro's Number
                             = (0.5/14) × Nₐ
                         

--------------------------------

Now, as per as the Options, Calculating the Number of atoms in each case,

For Option A.

Carbon,
  Mass of Carbon = 12 grams.
  Atomic Mass of Carbon = 12

Thus, Number of Atoms = (12/12) × Nₐ
                                       = 1 Nₐ

Option A can be Possible.

--------------------------------

For Option B.

Sulphur,
Mass of Sulphur = 32 grams 
Atomic Mass of Sulphur = 32 grams.

Thus, Number of Atoms = (32/32) × Nₐ
                                       = 1 Nₐ

Option B. cannot possible.

-----------------------------------

For Option C.

Oxygen,

  Mass of Oxygen = 8 grams.
Atomic Mass of the Oxygen = 16 grams.

Thus, Number of Atoms = 8/16 × Nₐ
                                       = 1/2 Nₐ

This can also not possible.

----------------------------------

For Option D.

Mass of Magnesium = 24 grams.
Atomic Mass of Magnesium = 24 grams.

Number of atoms = (24/24) ×  Nₐ
                             = 1 Nₐ

This option also cannot be possible.

--------------------------------

Thus, Out of option A, B, C and D, no option can be possible.There must be some others option.

Although, the solution of the Question is shown, you can easily match the number of atoms of the Nitrogen with the Correct option, which is result will give you the correct answer.




→→→→→→→→→→


Hope it helps.


Have a Nice day.