Answer:
% of mass of electrons in C = 0.0272
Explanation:
Atomic no. of carbon = 6
So, no. of electron = 6
Mass of an electron = 
Mass of 6 electrons = 
Mass of C = 12.0107 u
% of mass of electrons in C = 
% of mass of electrons in C = 
There are 207405.111 grams in that many pounds.
A) cesium chloride
B) barium oxide
C) potassium sulfide
D) beryllium chloride
E) hydrogen bromide
F) aluminum fluoride