In an electrically neutral atom of any element, there are equal numbers of
a) protons and neutrons.
b) electrons and protons.
c) electrons and neutrons.
d) atomic number and atomic mass.

Easy definition for atom and atomic mass

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

Which buffer would be better able to hold a steady ph on the addition of strong acid, buffer 1 or buffer 2? explain. buffer 1: a solution containing 0.10 m nh4cl and 1 m nh3. buffer 2: a solution containing 1 m nh4cl and 0.10 m nh3