There are 6.022 x 10^23 atoms of hg in 1 mole of hg. the number of atoms in 4.5 moles of hg can be found by multiplying 4.5 by 6.022 x 10^23 a. 2.7 x 10^24 b. 27 x 10^23 c. 2.71 x10^24 d. 27.099 x 10^23

D. 27.099 x 10²³.

Explanation:

So, 4.5 mol of Hg will contain:

(4.5 mol)(6.022 x 10²³) = 27.099 x 10²³ atoms.

So, the right choice is: D. 27.099 x 10²³.

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number of particles.

1 mole of contains = atoms of mercury

Thus 4.5 moles of contains = atoms of mercury

Thus the number of atoms in 4.5 moles of mercury are atoms of mercury.

c, liquids evaporate, creating a gas