Assertion: One mole of a substance always contain the same number of entities, no matter what the substance may be Reason: One mole is the amount of a substance that contains as many particles or entities as there are atoms in exactly 12 g of the 12C isotope.

Question

Assertion: One mole of a substance always contain the same number of entities, no matter what the substance may be Reason: One mole is the amount of a substance that contains as many particles or entities as there are atoms in exactly 12 g of the 12C isotope. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false. (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

One mole of a substance always contains the same number of entities, no matter what the substance may be which is

6.022 \times 1 0^{23}

. This is also the number of atoms present in

12 g

of

_{12} C

isotope.
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Q. Assertion: One mole of a substance always contain the same number of entities, no matter what the substance may be Reason: One mole is the amount of a substance that contains as many particles or entities as there are atoms in exactly 12g of the 12C isotope.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false.

If both assertion and reason are false

One mole of a substance always contains the same number of entities, no matter what the substance may be which is 6.022×1023. This is also the number of atoms present in 12g of 12​C isotope. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Q. Assertion: One mole of a substance always contain the same number of entities, no matter what the substance may be
Reason: One mole is the amount of a substance that contains as many particles or entities as there are atoms in exactly $12 g$ of the $^{12} C$ isotope.