NH4 is an ammonium cation (positively-charged molecular version of ammonia NH3) and it would look like this:
H
H N H
H
(NH4)2SO4 --> 2 (NH4)+ and (SO4)2- In words: 2 ions of ammonium and 1 ion of sulfate
[NH4]+ is ammonium for the ion. For the uncharged molecule it would be nitrogen tetrahydride NH3 is ammonia or nitrogen trihydride
"NH4" I assume is NH4+This is the ammonium ion.
To determine the number of grams in 2.80 moles of (NH4)2SO3, you need to multiply the molar mass of (NH4)2SO3 by the number of moles. The molar mass of (NH4)2SO3 is 132.14 g/mol, so 2.80 moles of (NH4)2SO3 would be equal to 2.80 moles x 132.14 g/mol = 369.392 grams of (NH4)2SO3.
(NH4)2SO4 but look here for more details: http://en.wikipedia.org/wiki/Ammonium_sulfate
NH4 is colorless.
NH3Cr2o7 is ammonium dichromate and CoCl3 is cobalt III Chloride
The compound is ammonium oxide. You can tell because the NH4+ and O2- ions are present.
There are 4.50 moles of NH4 2CO3 in 4.50 mol NH4 2CO3. Since each formula unit of NH4 2CO3 contains 2 moles of ammonium ions (NH4+), there would be 2 * 4.50 = 9.00 moles of ammonium ions in 4.50 mol NH4 2CO3.
NH4 is the chemical formula of the cation ammonium - (NH4)+.
The name of NH4+ is ammonium ion. Its chemical formula is NH4+.
NH4 +One plus.