Question

balance the following equation:
_ca + _o₂→___cao
when the equation is properly balanced, the correct coefficients are, respectively

Explanation:

Step1: Balance oxygen atoms

In \(O_2\) there are 2 oxygen atoms and in \(CaO\) there is 1 oxygen atom. To balance oxygen, put 2 in front of \(CaO\): \(\text{Ca}+\text{O}_2
ightarrow2\text{CaO}\)

Step2: Balance calcium atoms

After balancing oxygen, there are 2 calcium atoms on the right - hand side (\(2CaO\)). So put 2 in front of \(Ca\) on the left - hand side: \(2\text{Ca}+\text{O}_2
ightarrow2\text{CaO}\)

Answer:

2, 1, 2