20 CCC Proportion What are the top three sources of U. S. electricity
generation? Estimate the overall efficiency of U. S. electricity
generation. How does this compare to the efficiency for
transportation?

What is the mass of each element in a 324.8 sample of co2

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?

The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?