Question

Howmany atoms are there in 64g of oxygen

Answer 1

Molar mass of oxygen is 16 grams,

it means that 1 mole oxygen weighs 16 grams.

so,

64 gram oxygen = 64/16 = 4 mole oxygen.

1 mole of any element contains 6.022 * 10^23 atoms in it.

so, 4 moles of oxygen.

Answer 2

Answer:

16g of oxygen atom = 1 mole of oxygen atom

therefore 64g of oxygen = 1 × 64 /16 = 4 mole

Explanation:

6.022 × 10 to the power 23 = 1 mole of oxygen atom

6.022 × 10 to the power 23 × 4 = 24. 088 × 10 to the power 21 atom of O.

= 1 × 24.088 × 10 to the power 21 / 6.022 × 10 to the power 23

= 0.04 mole