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11 July, 01:07

Antacid tablets, such as tums, are mainly calcium carbonate. Calculate the mass of a tums tablet which contains 1000 mg of calcium.

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  1. 11 July, 03:11
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    The formula for calcium carbonate is

    CaCO3

    So each mole of calcium carbonate contains one mole of calcium

    Molar mass of calcium carbonate = 100g/mole

    Atomic mass of calcium = 40g / mole

    Hence if 40g of calcium is present it means we have 100g of calcium carbonate

    if 1 g of calcium is present it means we have 100 / 40 g of calcium carbonate

    So if 1000 mg of calcium is present = 100 X 1000 / 40 mg of CaCO3 is present

    = 2500 mg of CaCO3 in tum tablets
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