A copper atom has a diameter of 128 pm. how many centimeters is a line containing exactly 1.0 moles of copper atoms sequentially arranged? use "e" for scientific notation.

Question

Chemistry

Mckenna Ray

10 September, 11:01

A copper atom has a diameter of 128 pm. how many centimeters is a line containing exactly 1.0 moles of copper atoms sequentially arranged? use "e" for scientific notation.

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Sasha Mann · Answer 1

Answer is: a line containin 7,7e15 cm.

gr (Cu) = 128 pm = 128e-12 m · 10² cm/1 m = 1,28e-8 cm.

n (Cu) = 1 mol.

Na = 6,022e23 1/mol; Avogadro number.

N (Cu) = n (Cu) · Na.

N (Cu) = 1 mol · 6,022e23 1/mol.

N (Cu) = 6,022e23.

l = r (Cu) · N (Cu).

l = 1,28e-8 cm · 6,022e23.

l = 7,7e15 cm.