liquid
solid
If it were a solid at room temperature, then that would be the state of matter. However, hydrogen is NOT solid at room temperature. It is a gas and that would be the state of matter.
I believe that at room temperature, Carbon resides in the state of Minnesota.
Mercury is normally found in a liquid state at room temperature. It is the only metal that is liquid at room temperature.
Menthol is a solid at room temperature.
Lactic acid is not considered volatile at room temperature, as it is a non-volatile organic acid. Its vapor pressure is low, and it is unlikely to vaporize into the air at normal conditions.
Salicylic acid is a solid at room temperature.
Pure hydrochloric acid is a liquid in the room temperature and pressure.
Citric acid is a white crystalline powder at room temperature.
Acetic acid is typically a liquid at room temperature.
solid
Acetic acid is solid or in glacial state during winter
HF is a very corrosive gas at room temperature. It can even etch glass!
Acetic acid is a liquid at the room temperature and pressure.
Phosphorus trichloride is a colorless liquid at room temperature. It has a strong and unpleasant odor resembling that of hydrochloric acid.
Ethanoic acid is a clear, colorless liquid at room temperature with a pungent odor.
Unless your room is rather on the warm side, decanoic acid would be solid; it melts at about 31 degrees Celsius.