How many molecules and moles of sulfur are in 6.4g of S04?

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  • 5 years ago

    Let's assume you mean SO4^2- (sulfate anion):

    molar mass of SO4^2- = 96 g/mol

    6.4 g x 1 mol/96 g = 0.067 moles SO4^2-

    moles Sulfur: 0.067 moles SO4^2- x 1mol S/mol SO4^2- = 0.067 moles sulfur

    0.067mole x 6,02x10^23 atoms/mole = 4.0x10^22 S atoms

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