1) i need to know why water has a higher boiling point than expected because
a. there is so much water vapor in the atmosphere.
b. water molecules are not very massive.
c. hydrogen and oxygen form single covalent bonds.
d. of the strong attractions between polar water molecules
2) because water molecules are polar and carbon dioxide molecules are nonpolar,
a. water has a lower boiling point than carbon dioxide does.
b. attractions between water molecules are weaker than attractions between carbon dioxide molecules.
c. carbon dioxide cannot exist as a solid.
d. water has a higher boiling point than carbon dioxide does

1. how much energy is needed to raise the temperature of 40.0 g of argon from 25c to 40c? the specific heat capacity of argon is 0.520 j/(g·k) 2a. 23.0 ml of 0.100 m hcl (standard) are added from a buret to neutralize 50.0 ml of an unknown basic solution. 2b. if the oh- produced in the previous reaction came from ca(oh)2, then what is the molarity of the ca(oh)2? 3.calculate the new freezing-point of a solution when 60.5 grams of cacl2 solute is dissolved in 0.612 kg of water. 4. what is the maximum number of moles of alcl3 that can be produced from 5.0 mol al and 6.0 mol cl2? 5. a sample of oxygen gas has a volume of 150 ml when its pressure is 0.923 atm. if the pressure is increased to 0.987 atm and the temperature remains constant, what will the new volume be? 6. nitrogen gas in a closed container at a temperature of 100.0 oc and 3.0 atm is heated to 300 oc. what is the pressure of the gas at the higher temperature?