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Nataliya [291]
2 years ago
8

Calculate the number of copper atoms in a 63.55 gsample of copper.​

Chemistry
1 answer:
Effectus [21]2 years ago
6 0

Answer:

there are N_A, "Avogadro's number" of copper atoms in a 63.55*g mass of copper wire. And N_A, "Avogadro's number" = 6.022xx10^23 individual copper atoms. I look on the Periodic Table, and at Z=29, i.e. copper, the quoted atomic mass is 63.55*g.

Explanation:

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Read 2 more answers
If you measured out 100.0g of water, how many molecules of water would you have drank?
12345 [234]
<h3>Answer:</h3>

3.342 x 10^24 molecules of water

<h3>Explanation:</h3>

Given;

Mass of water = 100.0 g

Required to determine the number of molecules in 100.0 g of water

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1 mole of a compound contains 6.022 × 10^22  molecules

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= (100. 0 g ×6.022 × 10^23 molecules) ÷ 18.02

= 3.342 x 10^24 molecules

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