Why do we need to bring portable oxygen generator to Mars? Please give me an description of portable oxygen generator and give me a really good reason why we should bring it to Mars

If you could work on it right now I would really appreciate it. thank you

What is the study of how matter and energy interact? a. biology b. physics c. planetary science d. chemistry

In any energy conversion, some of the energy is lost to the environment as question 5 options: electrical energy potential energy sound energy thermal energy

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?