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14 June, 23:41

In this equation 2mg+o2=2mgo what is the coefficient to the oxygen molecule

A, 2

B, 4

C, 1

D, 0

+1
Answers (1)
  1. 15 June, 01:10
    0
    Hello!

    In this chemical equation, there are two main elements. Those elements are magnesium (Mg) and oxygen (O).

    Molecules are a group of atoms bonded together, and in this case, the oxygen molecules is O2, but not 2MgO because there are two different molecules in this compound.

    Coefficients are a number that multiply an entire molecule, and are also placed in front of it. In this case, O2 has no coefficient, but a subscript of 2. But, every molecule in this equation must have a coefficient and if add a coefficient of 1 to the oxygen molecule, it does nothing to the overall balancing of equations.

    Therefore, the coefficient to the oxygen molecule is choice C, 1.
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