Question

calculate the number of cu atoms in 0.635 of cu​

Answer 1

Answer:

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Answer 2

Answer:

1. 6.022 x 10^21.

2. given mass of copper= 0.635g.

3. molar mass of copper= 63.5g.

4. no. of atoms= given mass/molar mass x avagadro no.

5. = 0.635/63.5 x 6.022 x 10^23.

6. = 0.01 x 6.022 x 10^23.

7. = 6.022 x 10^21 atoms.