Draw the Lewis structure for the polyatomic nitrate anion. Be sure to include all resonance structures that satisfy the octet rule.

See explanation and image attached

Explanation:

A poly atomic ion refers to an ion that has more than one atom. The nitrate ion is one of such! It contains three oxygen atoms and one nitrogen atom.

It is an ion in which there is charge separation as shown in the image attached to this answer. The structures shown are the Lewis structure of the nitrate ion that satisfy the octet rule.

hcl + naoh → h2o + nacl

explanation:

hcl + naoh → h2o + nacl   is the reaction that is correctly balanced.

however, pcl3 + h2 → ph3 +3hcl, 2ca+ 3cl2 → cacl3, and c5h12 + 5o2 → 5co2 + 6h2o are not correctly balanced.