Question

Calculate the number of oxygen atoms in 18 ml of H₂O​

Answer 1

Answer:

Hii, Here is your answer:

Explanation:

Since,The density of water is 1g/ml.

So, Mass of 1ml of H20 is 1gm

=> Mass of 18ml H20 is 18gm.

And this 18g is the mass of 1 mol H20.

So,there are 1mol O- atoms in 18ml H20(as 1 H2O molecule contain 1 O-Atom).

So Answer is 1mol(I.e Avogadro no)

Hope it helps you!!

Answer 2

Answer:

1 Mole

Explanation:

Since,The density of water is 1g/ml.

So, Mass of 1ml of H20 is 1gm

=> Mass of 18ml H20 is 18gm.

And this 18g is the mass of 1 mol H20.

So,there are 1mol O- atoms in 18ml H20(as 1 H2O molecule contain 1 O-Atom).

So Answer is 1mol(I.e Avogadro no)

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