What is the correct clases for this drugs

‏Compazine
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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.

Adilute aqueous potassium nitrate solution is

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.