I am supposed to add NH4 and C2H3O2 together and write the new ion. Would it be NH7C2O2? do I add the hydrogens together and were would it go in the order then?

There is no new ion; however, the two ions come together to form ammonium acetate, NH4C2H3O2. Your NH7C2O2 is correct but few will recognize ammonium acetate that way. I recommend NH4C2H3O2 because we recognize NH4^+ as the ammonium ion and C2H3O2^- as the acetate ion.

Is this organic chemistry or G-chem?

inorganic chemistry

To determine the resulting ion when NH4 (ammonium) and C2H3O2 (acetate) are added together, we need to consider the charges and the number of each element present in the compounds.

The NH4 ion consists of one nitrogen atom (N) and four hydrogen atoms (H). It has a charge of +1, since the nitrogen donates its lone pair of electrons to form a coordinate bond with a proton.

The C2H3O2 ion consists of two carbon atoms (C), three hydrogen atoms (H), and two oxygen atoms (O). It has a charge of -1, as the two oxygen atoms bear a negative charge due to electron transfer in the bond formation.

When these two ions combine, the positive NH4 ion and the negative C2H3O2 ion attract each other electrostatically. However, the ions do not merge like terms in algebraic addition. Instead, they form an ionic compound called ammonium acetate, which is written as (NH4)(C2H3O2).

Note that in the compound, the ammonium ion, NH4+, and the acetate ion, C2H3O2-, are kept separated within parentheses to show that they are different entities.

So, the correct representation for ammonium acetate is (NH4)(C2H3O2).