Agraduated cylinder has 35.0 ml of water in it before and object is dropped inside. the new volume is 38.5 ml. what is the volume of the object in cm 3?

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 you want to create an electrical current, which situation would produce a solution capable of this

Based on the equation and the information in the table, what is the enthalpy of the reaction?