An aqueous solution containing an equal number of moles of Na2HPO4 and H3PO4 is an example of a buffer solution.

the increase of protons   hope this

i believe the answer is true.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.