Question

hydrofluoric acid express your answer as a chemical formula.

Explanation:

Step1: Identify the ions

Hydrofluoric acid is an acid, so it contains hydrogen ions ($H^+$) and the fluoride ion ($F^-$).

Step2: Combine ions to form formula

To form a neutral compound, the positive charge from $H^+$ and negative charge from $F^-$ balance. So one $H^+$ and one $F^-$ combine to form $HF$.

Answer:

$HF$