Question

1. hg is the symbol for the element:
2. write a chemical formula that shows 3 molecules of water:

Explanation:

1. The symbol \(Hg\) is derived from the Latin name "hydrargyrum" for mercury.
2. The chemical formula for water is \(H_2O\). To represent 3 molecules of water, we use the coefficient 3 in front of the formula.

Answer:

1. Mercury
2. \(3H_2O\)