The heat of vaporization for water is 40.7 kJ/mol. A given amount of water requires 63.8 kJ of energy to boil. The mass of the sample of water is - 13.2 g
18.0 g
22.28
28.2g
62.38

What two factors can affect the properties of a hydrocarbon? a. the number of its carbon atoms and the number of single bonds b. the number of its carbon atoms and the arrangement of its atoms c. the arrangement of its atoms and the number of its double bonds

Asubstance is held in an open container. its particles move past one another at random speeds but do not leave the container. heat is removed from the system, and the particles slow down. when enough heat is removed, the particles no longer have enough speed to overcome the weak attractive forces between them. when this happens, the substance enters its solid state. the process described above is known as .

Is cutting your nails a physical or chemical change