Question

Calculate number of particles in 8g of 02

Answer 1

Answer:

Answer:

Explanation:

(i) 32g of O2 have molecules = 6.022 X 10^23.

So, 8g of O2 have molecules = (6.022 X 10^23/32) x 8.

= 1.5 x 10^23 molecules.

(ii) 1 mol of calcium have a = 6.022 X 10^23 atoms.

So, 2.5 mol of calcium have a = 6.022 X 10^23 x 2.5.

= 15.055 x10 ^23 atoms.

Answer 2

Explanation:

No of particles in O2=(8/32)*6.023 x10²³

=1.50575 x10²³