Question

How many mercury atoms are in 6.7 mol of mercury?

Answer 1

i think there are 13.55 g/c.c

Answer 2

Answer: $4.0\times 10^{24}$ mercury atoms

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains avogadro's number $6.023\times 10^{23}$ of particles.

1 mole of mercury $Hg$ contains=$6.022\times 10^{23}$ atoms

Thus 6.7 moles of mercury $Hg$ contains=$\frac{6.022\times 10^{23}}{1}\times 6.7=4.0\times 10^{24}$ atoms

Thus there are $4.0\times 10^{24}$ mercury atoms are in 6.7 mol of mercury.