Chemistry Question (1 Viewer)

[x.Exhaust.x]

I'm not sure about this question. All help is appreciated. Please show working out.

How many atoms are there in a pure copper coin weighing 2.56g?

Thx .

 

[lyounamu]

I'm not sure about this question. All help is appreciated. Please show working out.

How many atoms are there in a pure copper coin weighing 2.56g?

Thx .

No. moles in copper= 2.56 / 63.6
= 0.0402515723...

No. atoms of copper = 0.0402515723 x 6.02 x 10^23 (avogadro's number)
= 2.423144... x 10^22

 

[x.Exhaust.x]

No. moles in copper= 2.56 / 63.6
= 0.0402515723...

No. atoms of copper = 0.0402515723 x 6.02 x 10^23 (avogadro's number)
= 2.423144... x 10^22

Thanks Namu