Atomic wieght of 4 grams of oxygen

1.	Atomic wieght of 4 grams of oxygen
Answer» Answer: We have OXYGEN here, okay now oxygen’s atomic MASS is 16. That means 16 grams of oxygen is 1 mole of oxygen. 1 mole = 6.022 x 10^23 atoms <== Avogadros’s constant 16G = 1 mole = 6.022 x 10^23 atoms of oxygen 16G = 1 mole ; then 4G = how many moles? 4/16 = 0.25 mole; That means 4 grams of oxygen is 0.25 moles. So we multiply 0.25 by the no. of atoms in ONE mole (Avogadro’s constant) 0.25 x (6.022 x 10^23) = 1.5055 x 10^23 Thus 4 grams of oxygen has 1.5055 x 10^23 atoms. Hope it was HELPFUL :)

Answer»

Answer:

We have OXYGEN here, okay now oxygen’s atomic MASS is 16. That means 16 grams of oxygen is 1 mole of oxygen.

1 mole = 6.022 x 10^23 atoms <== Avogadros’s constant

16G = 1 mole = 6.022 x 10^23 atoms of oxygen

16G = 1 mole ; then 4G = how many moles?

4/16 = 0.25 mole; That means 4 grams of oxygen is 0.25 moles.

So we multiply 0.25 by the no. of atoms in ONE mole (Avogadro’s constant)

0.25 x (6.022 x 10^23) = 1.5055 x 10^23

Thus 4 grams of oxygen has 1.5055 x 10^23 atoms.

Hope it was HELPFUL :)

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