Density = mass/volume ( Mercury is 13.534 grams/milliliter, and milliliter = cubic centimeter ) 13.534 g/ml = grams/9.1 cc (or ml) = 123.1594 grams of Hg ( Mercury) 123.1594 grams Hg (1 mole Hg/200.6 grams)(6.022 X 10^23/1 mole Hg) = 3.7 X 10^23 atoms of mercury
78.96 g of selenium will have 6.023 x 1023 atoms. So, 30.4 g of selenium will have 2.32 x 1023 atoms.
5 g of sulfur contain 0,94.10e23 atoms.
156,86.1020 atoms of uranium in 6,2 g uranium
620 grams mercury (1 mole Hg/200.6 grams) = 3.09 moles Hg
1 Hg = 100 g
Hg(g) -> Hg^+(g) + e^-
2 hg = 200 g
115/7=16.42mol
1 gram = 0.01 hg.1 gram = 0.01 hg.1 gram = 0.01 hg.1 gram = 0.01 hg.
Density = mass/volume ( Mercury is 13.534 grams/milliliter, and milliliter = cubic centimeter ) 13.534 g/ml = grams/9.1 cc (or ml) = 123.1594 grams of Hg ( Mercury) 123.1594 grams Hg (1 mole Hg/200.6 grams)(6.022 X 10^23/1 mole Hg) = 3.7 X 10^23 atoms of mercury
The number of atoms of lead is 6,68.10e23.
49.1740 g (6.02 x 1023 atoms) / (91.22 g) = 3.25 x 1023 atoms
149 g of calcium contain 22,39.10e23 atoms.
100 times ------------------------------------ The hecto- prefix means 100 → 1 hg = 1 × 100 g = 100 g → 1 hg is 100 times larger than 1 g.
6,687.1023 chlorine atoms
27,30.10e23 atoms