An electric clothes dryer has a power rating of 3500 W. If you do 2 loads of laundry a week (each needing 1 hour of drying time) for 4 weeks, find the cost to operate the dryer over the 4 week period if you are charged $.09/ kWh? Show your work and units! ​

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?