Compute 214.056 + 9.3456 round the answer appropriately

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?

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit