We have the mass, volume, and density of a piece of aluminum. How would we find the number of atoms in it?
2006-09-27 02:14:31 · 7 answers · asked by zweeman16 1 in Science & Mathematics ➔ Chemistry
How do we find the diameter of a single aluminum atom
2006-09-27 02:41:47 · update #1
assuming the density is mass per volume, you should divide it by the aluminium atomic mass(26.98):
number_density = density/atomic_mass = density/26.98
,thus getting the number_density (number of atoms per unit volume), then do the following:
total number of moles = number_density*volume.
This will give you the number of moles in the piece.
Now, in order to get the number of atoms all that's left is to multiply this with the avogadro number:
number of atoms =
= (total number of moles)*avogadro number =
= (total number of moles)*(6.0221415 × 10^23),
have fun...
2006-09-27 02:26:39 · answer #1 · answered by Ilham Aliyev 2 · 2⤊ 0⤋
Aluminium Atomic Number
2016-12-11 13:43:47 · answer #2 · answered by zarate 4 · 0⤊ 0⤋
Al Atomic Number
2016-10-05 03:05:36 · answer #3 · answered by ? 4 · 0⤊ 0⤋
It's very simple experiment. Weigh the aluminum foil in an electronic balance. You know the atomic mass of aluminum, and the Avogadro's number. Avogadro's number (6.022 x 10^22) of atoms are present in 1 mol aluminum - use dimensional analysis to calculate the number of atoms in the given mass of aluminum foil. Hope it helps
2016-03-18 01:54:19 · answer #4 · answered by Anonymous · 0⤊ 0⤋
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All you have to do is weigh it. Then take the mass and divide by the atomic mass of aluminum which is 26.98 grams per mole. This will give you the number of moles. Then take the number of moles and multiply that by Avogadro's number (6.02 x 10 ^23) and you will have the number of atoms.
2016-04-05 02:10:14 · answer #5 · answered by Anonymous · 0⤊ 0⤋
First, you need to find the number of moles of aluminium.
This can be done by dividing the mass by the molar mass (which can be found from the periodic table, to be 26.98).
Then, multiply this by the avogadro's constant (6.0221415 × 1023 mol-1), and you'll get the number of atoms.
If given the volume (mass/density), convert it to dm^3 before multiplying with the Avogadro's constant.
2006-09-27 02:20:28 · answer #6 · answered by chemistry_freako 3 · 2⤊ 0⤋
Protons = atomic number
Neutrons = atomic mass - atomic number
Electrons (assuming that the element didn't lose or gain any atoms) = atomic number
2006-09-27 02:22:29 · answer #7 · answered by Anonymous · 1⤊ 2⤋
find the mass of an aluminium atom and divide. That's what we did in chemistry class. all you need is the mass
2006-09-27 02:16:21 · answer #8 · answered by Anonymous · 1⤊ 2⤋