Answer:
The mass number of an atom is its total number of protons and neutrons.
Explanation:
Its b Fe(s) <span> Fe</span>2+(aq) + 2e– <span><span> </span>E</span><span> = </span><span>+0.44 V</span>
HBr is the formula for hydrobromic acid
9 is B
6 is A
i’m not sure about the rest
