The NH4 asked about is the amonium ion, and it's written NH4+ to indicate it has a positive charge (+1). It's a cation. Wikipedia has more information on this chemically â¦ significant polyatomic ion, and you'll find that a link to that post is provided below. + 7 others found this useful.
Gilbert is a town in Maricopa County, Arizona, United States, just southeast of Phoenix, within the Phoenix metropolitan area.
People in group quarters in Pinal County, Arizona in 2000: 1  10,014 people in state prisons. 2  1,698 people in federal prisons and detention centers. 3  1,453 people in other types of correctional institutions.  387 people in local jails and other confinement facilities (including police lockups)