If you zoom all the way in, what is the smallest object on the head of the pin?

Iknow the answer is a but i don't know why

Which statements are true about electrolysis? check all that apply. electrolysis requires an acid be present. electrolysis is described by two half-reactions. electrolysis is not an industrial process. electrolysis results in commercially valuable products. electrolysis involves the transfer of electrons. reduction results in the loss of electrons. oxidation results in the loss of electrons.

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.