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10-04-2021
Chemistry

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How many grams of Pb are there in a sample of Pb that contains 1.15×1024 atoms? grams

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10-04-2021

Solution:

[tex]\text{mass of Pb = 1.15 × 10²⁴ Pb atoms} × \frac{\text{1 mol Pb}}{\text{6.022 × 10²³ Pb atoms}} × \frac{\text{207.2 g Pb}}{\text{1 mol Pb}}[/tex]

[tex]\boxed{\text{mass of Pb = 396 g}}[/tex]

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