What are the units of molar mass?
O A Lg
B. g/mol
O C. g/L
D. mol/g

The answer is B.units of molar mass are g/mol

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.