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amiechap12
11.02.2020 •
Physics
The diameter of a copper atom is approximately 2.28×10−10 m. The mass of one mole of copper is 64 g. Assume that the atoms are arranged in a simple cubic array. Remember to convert to SI units.
(a) What is the mass of one copper atom, in kg?
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Ответ:
Answer : The mass of one copper atom is, [tex1.06\times 10^{-25}kg[/tex]
Explanation : Given,
Mass of one mole of copper = 64 g
First we have to convert the mass of copper from gram to kilogram.
Conversion used :
1 kg = 1000 g
or,
1 g = 0.001 kg
So, mass of copper = 64 g = 0.064 kg
Now we have to calculate the mass of one copper atom.
As,
atoms of mass of copper = 0.064 kg
So, 1 atoms of mass of copper =![\frac{0.064}{6.022\times 10^{23}}=1.06\times 10^{-25}kg](/tpl/images/0506/8859/0d159.png)
Thus, the mass of one copper atom is, [tex1.06\times 10^{-25}kg[/tex]
Ответ: