Chemistry

How many oxygen atoms are in 6.70 g of Al2(SO4)3? Express your answer using scientific notation with two decimal places.

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  1. moles Al2(SO4)3 = 6.70/molar mass Al2(SO4)3.
    Molecules Al2(SO4)3 = moles x 6.022E23.
    atoms oxygen = 12 times that

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