Question

Class 11 Chemistry
1 chapter

Topic mole concept

Brief explanation i will give 10 thanks on best!!!​

Answer 1

Answer:

here is the answer

For example, a mole of water contains NA number of H2O molecules. However, each water molecule contains 2 hydrogen atoms and one oxygen atom. Therefore, one mole of H2O contains 2 moles of hydrogen and one mole of oxygen.

Explanation:

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Answer 2

Mole concept:

1 mole of a substance is equal to its atomic mass or molecular mass expressed in grams.

The atomic mass expressed in grams is the gram atomic mass.

The molecular mass expressed in grams is the gram molecular mass.

For example

The atomic mass of sodium is 23 grams.

Therefore, 23 grams of sodium is equal to one mole of sodium atoms.

Similarly, the molecular mass of oxygen (O2) =  2 × Atomic mass of oxygen

                                                           = 2 × 16 = 32 g

So, 32 grams of oxygen is equal to one mole of oxygen molecules.

1 mole (of anything) = 6.022 × 1023 in number