Aaron conducted an experiment. He covered a pot of boiling water with a lid. The steam changed back to water. He concluded that- A. a physical change occurred

B. the chemical makeup of water changed

C. both physical and chemical changes occurred

D. there was no chemical or physical change

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A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?

What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added