Caulk or seal behind baseboards and in cracks and crevices where centipedes like to hide. Place a dehumidifier in damp areas to sufficiently dry the air. Structural repairs may be necessary to the home and/or yard if a dehumidifier does not keep a room sufficiently dry.
Hydrogen chloride is a colorless to slightly yellow gas with a sharp, irritating odor. It forms a dense white vapor when it comes in contact with air. When hydrogen chloride dissolves in water, it forms hydrochloric acid also known as muriatic acid.
The following experiment should be carried out with care. Calcium reacts with dilute hydrochloric acid to give calcium chloride and hydrogen gas. Calcium reacts with dilute sulphuric acid to give calcium sulfate and hydrogen gas.Initial reaction is fast, but gradually slows down.This is because calcium sulfate is quite insoluble in water, which forms a protective layer on calcium and preventing the acid to react effectively with calcium.alcium, Ca. Reaction with water. When a small piece of calcium is added to water, it sinks to the bottom of the water. Colorless gas bubbles evolved at a moderate rate.