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Nikitich [7]
2 years ago
6

The part of the atom that is free to move between materials is???

Chemistry
1 answer:
Kruka [31]2 years ago
4 0

Answer:

Electrons

Explanation:

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Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48g/cm3. A fitting composed of c
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First, we calculate the mass of the sample:

mass = density x volume
mass = 8.48 x 112.5
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Now, we will calculate the mass of each component using its percentage mass, then divide it by its atomic mass to find the moles and finally multiply the number of moles by the number of particles in a mole, that is, 6.02 x 10²³.

Zinc mass = 0.37 x 954
Zinc mass = 352.98 g
Zinc moles = 352.98 / 65
Zinc moles = 5.43
Zinc atoms = 5.43 x 6.02 x 10²³
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Copper mass = 0.63 x 954
Copper mass = 601.02 g
Copper moles = 601.02 / 64
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