Which example possesses mechanical potential energy?
a.
a taut guitar string
o
b. an oscillating pendulum
o
a roller coaster ride
o
d.
a child on a swing
o
e.
a speeding car

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

Give the orbital configuration of the phosphorus (p) atom.