The answer is "C" because all isotopes have a different mass number. The number of protons does not change. The mass of electrons is negligible. Thus, the number of neutrons changes.
I believe the first one is correct
Answer:
<h2>HCL ( Hydrogen-Chloride )</h2>
HCl is lewis acid
And NH4+is conjugate acid
Not sure how they're connected to atmosphere other than polluting it with hot ash, but im fairly certain it creates land masses which separate oceans and form land underwater with certain underwater volcanoes
