multiple choice\nquestion 5\nselect the coeff...
multiple choice\nquestion 5\nselect the coefficient which would make the equation below balanced.\n?mg + o₂ → 2mgo\na 2\nb 3\nc 4\nd 5
Answer
# Explanation:
## Step1: Count atoms on the right - hand side
In \(2MgO\), there are \(2\) \(Mg\) atoms and \(2\) \(O\) atoms.
## Step2: Balance \(Mg\) atoms on the left - hand side
Since there are \(2\) \(Mg\) atoms on the right - hand side (\(2MgO\)), we need \(2\) \(Mg\) atoms on the left - hand side. So the coefficient of \(Mg\) should be \(2\). The equation becomes \(2Mg+O_{2}\to2MgO\). Now, check oxygen atoms: \(O_{2}\) has \(2\) \(O\) atoms and \(2MgO\) has \(2\) \(O\) atoms. The equation is balanced.
# Answer:
A. 2