When water is measured in a plastic graduated cylinder, a reverse meniscus

When water is measured in a plastic graduated cylinder, a reverse meniscus is observed because

 a.
the hydrogen bonds between water molecules are greater than the attractions between the water molecules and the walls of the container.
 b.
the viscosity of the water is greater than the viscosity of the plastic.
 c.
surface tension of the water prevents it from "beading up" inside the container.
 d.
the molecules of water are forced closer together because of London forces.
 e.
the attractive forces between the water molecules and the walls of the container are greater than the attractive forces between the water molecules.


Which choice is best? The unusually high enthalpy of fusion, enthalpy of vaporization, and specific heat capacity of water impact our natural environment because these properties
    
 a.
prevent ice from sinking to the bottom of deep lakes in cold temperatures.
 b.
allow liquids to rise in plant stems through capillary action.
 c.
moderate temperature changes near large bodies of water.
 d.
cause water to be a greenhouse gas that contributes to natural global warming.
 e.
allow rapid transfer of thermal energy within living things.


Which of the following products of the catalytic cracking of petroleum is used as a starting material in the organic chemical industry?
   
 a.
acetylene
 b.
ethylene
 c.
propylene
 d.
butylene
 e.
all of these choices