Question

In this equation, 2Mg + O2 → 2MgO, what is the coefficient of the oxygen molecule?



a. 2


b. 1


c. 4


d. 0

Answer 1

i’m pretty sure it’s c

Answer 2

The coefficient of the oxygen molecule is 1.

Given:

The equation:

$2Mg + O_2 \rightarrow 2MgO$

To find:

The  coefficient of the oxygen molecule

Solution:

The stoichiometric coefficient is the numeral coming before the of symbol compound or an element in a balanced chemical reaction equation.

$2Mg + O_2 \rightarrow 2MgO$

The stoichiometric coefficient of Magnesium = 2

The stoichiometric coefficient of oxygen molecule = 1

The stoichiometric coefficient of Magnesium oxide = 2

The coefficient of the oxygen molecule is 1.

Learn more about stoichiometric coefficients here:

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