A 17.44 gram sample of a hydrate of zinc sulfate is heated strongly in a crucible to dehydrate completely. After heating, the mass of the sample is 9.79 grams.
Calculate the molecular formula for this hydrate.

What were the success and failures that came to boyle’s excitements?

Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j

Which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.