4. 100 grams of ice at -15 degrees C are placed in a container. How much heat in joules must be added to do the following?
(1) Raise the temperature of the ice to 0 degrees C (C for ice is= 2.1 J/gC);
(2) Melt the ice;
13) Heat water from 0 degrees C to 100 degrees C;
(4) Change 100 deg water to steam.

power out to power in less than 100%

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.