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9 October, 05:10

Ca (s) + br2 (l) ⟶cabr2 (s) express your answer as a chemical equation. identify all of the phases in your answer.

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  1. 9 October, 08:42
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    The question requires to balance the equation.

    The equation is already balanced, so the answer is:

    Ca (s) + Br2 (l) ⟶CaBr2 (s)

    Explanation:

    1) The phases are identified with a letter to the right of the compound or element:

    So, for Ca, the phase is (s) which means solid.

    For Br₂ (l) the phase is (l) which means liquid.

    For CaBr₂ (s) the phase is (s) which means solid.

    2) The core work of balancing is make the number of atoms of each element on the reactants equal to the same number of atoms on the products side.

    That is the law of conservation of mass applied to chemcial reactions.

    3) So, you have to add coefficientes on the right place to make the number of atoms on the left side equal to the number of the same kind of atom on the right side.

    In this table you can verify that the equation given is balanced:

    atom left side right side

    Ca 1 1

    Br 2 2

    So, you do not need to modify any coefficients.
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