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hush
hush asked in Science & MathematicsChemistry · 4 months ago

How many moles of atoms are in 8.1 × 10^5 g Pb? Answer in units of mol.?

How many moles of atoms are in 8.1 × 10^5

g

Pb?

Answer in units of mol.

3 Answers

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  • Simonizer1218
    Lv 7
    4 months ago
    Favorite Answer

    8.1x10^5 g Pb x 1 mol Pb / 207 g = 3.91x10^3 moles Pb

    3.91x10^3 mol Pb x 6.02x10^23 atoms/mol x 1 mol atoms/6.02x10^23 atoms

    = 3.91x10^3 moles of atoms

  • Morningfox
    Lv 7
    4 months ago

    8.1 x 10^5 is eight characters (not counting the spaces).

    810,000 is seven characters, and is easier to understand.

    Each mole of lead (naturally occurring) has a mass of 207.2 grams.

  • billrussell42
    Lv 7
    4 months ago

    Pb is 207 g/mol

    810000 g / 207 g/mol = 3910 mol

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