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CHEMISTRY

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If a tablet contains 129 mg of Mg(OH)2 and 505 mg of CaCO3, how many moles of HCl would theoretically be neutralized?

  • CHEMISTRY -

    Mg(OH)2 + 2HCl ==> MgCl2 + 2H2O
    CaCO3 + 2HCl ==> CaCl2 + H2O + CO2

    mols Mg(OH)2 = 0.129/molar mass = ?
    mols CaCl3 = 0.505/molar mass.

    ?mol Mg(OH)2 x 2 = mols HCl
    ? mol CaCO3 x 2 = mols HCl
    Total mols HCl = sum of the above.

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