multiple choice\nquestion 5\nselect the coefficient which would make the equation below balanced.\n?mg + o₂…

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

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