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19 September, 18:50

An unknown compound has the following chemical formula: Mg_xCl_2

where x stands for a whole number.

Measurements also show that a certain sample of the unknown compound contains 6.80 mol of magnesium and 13.56 mol of chlorine.

Write the complete chemical formula for the unknown compound.

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  1. 19 September, 21:47
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    Given parameters:

    number of moles magnesium = 6.80mol

    number of moles of chlorine = 13.56mol

    To find the complete chemical formula, we should obtain the formula of the compound.

    Mg Cl

    Number of

    moles 6.8 13.56

    Dividing

    by the smallest 6.8/6.8 13.56/6.8

    1 2

    The formula of the compound is MgCl₂

    This is an ionic compound in which Magnesium loses two electrons that would be gained by Cl atoms requiring just an electron each to complete their octet.
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