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Pruitt
Chemistry
12 July, 20:09
How much does 1.5 x 10" atoms of neon weigh?
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Johanna Castaneda
12 July, 20:26
0
5.027 * 10^-12 g
Explanation:
Assuming the number of atoms given is;
1.5 * 10^11 atoms of Neon
We can get the mass of the atoms given;
We need to know that 1 mole of an element contains atoms that are equivalent to the Avogadro's number. That is, 1 mole of an element = 6.022 * 10^23 atoms
In this case;
1 mole of Ne contains 6.022 * 10^23 atoms Therefore, to get the mass of the atoms given; Molar mass of Ne is 20.18 g/mol
Therefore;
20.18 g contains 6.022 * 10^23 atoms
Thus;
Mass = (20.18 g * 1.5 * 10^11 atoms) : 6.022 * 10^23 atoms
= 5.027 * 10^-12 g
Therefore, 1.5 * 10^11 atoms of Neon contains a mass of 5.027 * 10^-12 g
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