A compound is a chemical substance that forms when two or more different elements combine in a fixed ratio. Water (H2O), for example, is a compound that is made up of two hydrogen atoms for every one oxygen atom. Sodium chloride (NaCl) is a compound made up of one sodium atom for every chlorine atom.
Hudson, Iowa. Hudson is a city in Black Hawk County, Iowa, United States. The population was 2,282 at the 2010 census. The rural community of Hudson has grown in recent years and is included as a part of the Waterloo-Cedar Falls Metropolitan Statistical Area. Contents.
Hudson County, NJ has a population of 674,836 people with a median age of 35 and a median household income of $60,530. Between 2014 and 2015 the population of Hudson County, NJ grew from 669,115 to 674,836, a 0.86% increase and its median household income grew from $58,479 to $60,530, a 3.51% increase. The population of Hudson County, NJ is 43% Hispanic, 28.9% White, and 14.8% Asian.