9. When the vapor pressure of a liquid is equal to the atmospheric pressure, the liquid will
A) freeze
B) boil
C) melt
D) condense

Lewis structure and molecular geometry for nh2cl

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution?