Question

Define Avagadro's number and give its value.

Answer 1

Hey !!

1st of all , i am going to write about mole concept .

Then , we will get all .

⚠mole concept .

For the counting of articles , the unit dozen or unit gross is commonly used irrespective of their nature . Example - one dozen pencil = 12 pencils . one gross books = 144bookd .In a similar way for counting of atoms , molecules ions etc .chemist use the unit "mole "

⏩A mole is the amount of substance that contains the same number of entities (I,e,,atom , molecules or ions ) as there are atoms in 12 grams of the carbon atom , which atomic mass is 12 .

▶mole is a collection of 6.023×10²³ particles ( may it be atoms , molecules , or ions) of a substance example , 1 mole oxygen of atoms (O) = 6.23×10²³ molecules of oxygen .

⏭ 1 mole of oxygen molecules ,(O2) = 6.023×10²³ molecules of oxygen .

⏭ The number , 6.023 × 10²³ , which represents the number of particles in a mole , is known as Avogardro number [NA]

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Hope it helps you !!!

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Answer 2

Hope helps you

Have a great day