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When surface water dissolves carbon dioxide, carbonic acid (H2CO3) is formed. When the water moves underground through limestone formations, the limestone dissolves and caves are sometimes produced.
CaCO3(s) + H2CO3(aq) Ca(HCO3)2(aq)

What mass of limestone must have dissolved if 1.98 1010 kg of calcium hydrogen carbonate was produced?

  • chemistry -

    !. Write and balance the equation. I note there is no arrow in your equation.
    2. Convert grams calcium hydrogen carbonate to moles. moles. = grams/molar mass.
    3. Using the coefficients in the balanced equation, convert moles in step 2 to moles of limestone.
    4. Convert mols limestone to grams. grams = moles x molar mass.
    Post your work if you get stuck.

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