Achemist weighed out 101. g of mercury. calculate the number of moles of mercury she weighed out

0.504 moles First look up the atomic weight of mercury. atomic weight of mercury = 200.59 Then divide the mass of the mercury you have by it's atomic weight 101 / 200.59 = 0.503515 So you have 0.503515 moles of mercury. Round the result to 3 significant digits giving you 0.504 moles.

The correct answer is c. orbital shape. "the angular momentum quantum number l describes the shape of an orbital. it corresponds to each orbital type, i.e. (0,1,2,−1)=(s,p,d,f,g,"