Explain why alternative fuel technologies, such as fuel cells, are being developed. Use
evidence from the text and graphics to support
your answer.

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?

What metric units would you use to measure the thickness of a key

The arrangement of particles is most ordered in a sample of