Ice, water, fog/water vapor
The correct answer is option 1. Carbon dioxide is nonpolar because the shape of the molecule is symmetrical. It is a linear molecule where the oxygen atoms are symmetrical on each end. CO2 molecule do not have a region of unequal sharing.
The answer is 6,125. To get this you multiply both by 9.8
You just need the number of protons and number of neutrons as the mass of eelctrons is negligible