What volume of aluminum has the same number of atoms as 10 cm^3 of mercury?
What volume of aluminum would contain the same number of atoms as 10 cm³ of mercury?
1 Answers
The density of Aluminum is 2.7 grams / cm^3
The Atomic weight of Aluminum is 27.
The density of Mercury is 13.5 grams / cm^3
The atomic weight of Mercury is 200.6.
10 cm^3 of Mercury weighs 135 grams.
135 grams Hg / 200.6 grams per mole Hg gives 0.673 moles of Mercury atoms.
0.673 moles of Aluminum x 27 grams per mole Al gives 18.2 grams of Aluminum.
18.2 grams Al / 2.7 grams per cm^3 = 6.7 cm^3.
The Aluminum atoms are so much smaller they pack into a smaller volume than Mercury Atoms.
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