how would the structure of an atom that has an atomic number of 9 and a mass number of 19
differ from the structure of an atom that has an atomic number of 8 and a mass number of 16?

What’s a special glass that most beakers are made of

Look at the bean data from days 4–6. use these data to explain how natural selection changed the number of dark red walking beans over time. writing part

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?