17. (a) how much heat transfer is necessary to raise the temperature of a 0.200-kg piece of ice from −20.0ºc to 130ºc, including the energy needed for phase changes? (b) how much time is required for each stage, assuming a constant 20.0 kj/s rate of heat transfer?

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

inverse v=i*r

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explanation: