In a fertilizer experiment, what are the constants

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

Compare and contrast the bohr model and the electron cloud models of the atom.

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?