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    Question

    What is the chemical formula of

    “Chalk”?
    A CaCO₃ Correct Answer Incorrect Answer
    B CaCl₂ Correct Answer Incorrect Answer
    C Ca(OH)₂ Correct Answer Incorrect Answer
    D H₂SO₄ Correct Answer Incorrect Answer

    Solution

    Chalk is made up of calcium carbonate. Calcium carbonate's molecular formula is CaCO3.

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