If 500 mL of a liquid has a density of 1.11 g/mL, what is the missing unit ( what are you looking to solve)

Does the energy in a solid increase or decrease when changing to a liquid?

One or more substances changing into one or more substances is an example of a

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.