For which substances would 2 cm3 have a mass greater than 6 g

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?

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption

What is the percent by mass of oxygen in fe2o3