it is 12.51 grams cause u just add them together
Answer:
\large \boxed{5}
Explanation:
Molecules of NH₄OH do not exist.
If they did, however, here is how you might answer.
Total H atoms = 39 H
-7H₂O =<u> 14 </u>
H atoms available = 25 H
Each "molecule" of NH₄OH contains five H atoms.

It would be letter "B", positive. Anions are the ones with negative charges.
A) Salt, because salt can easily dissolve in water. Oil would not dissolve or evaporate in water (think of an oil spill - does that oil dissappear?). Aluminum foil would definitely not dissolve in water, so it is not soluble.