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1. Use concepts of chemical bonding and/or intermolecular forces to account for each of the following observations:
a) Boiling points of water, ammonia, and methane are 100 degrees C, -33 degrees C and -164 degrees C, respectively.
b) At 25 degrees C and 1.0 atm, chlorine is a gas, bromine a liquid, and iodine is a solid.
c) Calcium oxide (2615 C) melts at a much higher temperature than does potassium chloride (770 C).
d) Propane is a gas and ethanol is a liquid, even though they have similar molar masses.
a) Boiling points of water, ammonia, and methane are 100 degrees C, -33 degrees C and -164 degrees C, respectively.
b) At 25 degrees C and 1.0 atm, chlorine is a gas, bromine a liquid, and iodine is a solid.
c) Calcium oxide (2615 C) melts at a much higher temperature than does potassium chloride (770 C).
d) Propane is a gas and ethanol is a liquid, even though they have similar molar masses.