Question

How many atoms are there in 2.43 g of mercury?

Answer 1

Number of moles of mercury =
`(weight of mercury)/(molar mass of mercury) = (2.43)/(200.59) = 0.012 moles`. Number of atoms = moles of Hg x 6.02 x 10^23 = 0.012 x 6.02 x 10^23 = 7.224 x 10^21 atoms. Hope this helps!