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 significant polyatomic ion, and you'll find that a link to that post is provided below.
Uranium
This oxide is called dinitrogen pentoxide.
(NH4)+ is a cation (ammonium).
In chemistry, "K" can also stand for the equilibrium constant, which is a measure of the ratio of the concentrations of the products to the concentrations of the reactants at equilibrium in a chemical reaction.
They are used to fix an object to a bar from a stand.
No, the formula SO4 2- stands for the sulfate ion, not ammonium. Ammonium is represented by the formula NH4+.
In chemistry, "UG" stands for "Uranium Glass."
NH3 is classified as a base in chemistry because it can accept a proton (H) from an acid to form the ammonium ion (NH4), making it capable of neutralizing acids.
carbon
Uranium
I think this belongs in Chemistry NH3 is Ammonia and NH4 would be an ammonia ION which is called Ammonium
Sulfur
francium
it's very complicated go ask your chemistry teacher. actually i don't know
In Chemistry it stands for Iron
The letter U stands for Uranium.
"NH4" I assume is NH4+This is the ammonium ion.