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10-11-2020
Chemistry

contestada

How many moles of Pb are in 4.71 × 10^21 Pb atoms?

Respuesta :

10-11-2020

Answer:

0.00782 mol Pb

Explanation:

There are always 6.02 × 10²³ atoms in 1 mole of an element.

4.71 × 10²¹ atoms Pb × (1 mol Pb ÷ 6.02 × 10²³ atoms) = 0.00782 mol Pb

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