A pre-test or pre-inspection is an unofficial test provided as an option to vehicle owners prior to having an official Smog Check performed on the vehicle. Smog Check stations may charge for this service if authorized by the consumer.
Ammonia or azane is a compound of nitrogen and hydrogen with the formula NH 3. It is a colourless gas with a characteristic pungent smell. Ammonia contributes significantly to the nutritional needs of terrestrial organisms by serving as a precursor to food and fertilizers.iquid ammonia is an ionising solvent, although less so than water, and dissolves a range of ionic compounds, including many nitrates, nitrites, cyanides and thiocyanates. Most ammonium salts are soluble and act as acids in liquid ammonia solutions. The solubility of halide salts increases from fluoride to iodide.
Ammonia is the chemical name for the molecular formula NH3, which is a compound of nitrogen and hydrogen. It is also known by the name azane.... Ammonia is the chemical name for the molecular formula NH3, which is a compound of nitrogen and hydrogen. It is also known by the name azane. Ammonia has the properties of a colorless gas with a strong, characteristic odor. It has a density approximately half that of air and liquefies easily. Liquid ammonia is known by the name ammonium hydroxide. The odor of ammonia is easily neutralized with sodium bicarbonate. Ammonia is frequently used as an industrial fertilizer, a cleansing agent, a nitrogen source in the fermentation industry, and an effective antimicrobial agent in the food industry.