Physics

posted by i need help

A physicist converted 2 kg of water at 37 degrees celcius to steam at 100 degrees celcius. Assuming no heat is lost, calculate the amount of energy needed to heat to 100 degrees celcius.

  1. Damon

    Yes, your wording indicates that you need help.

    You not only have to heat the water to 100 deg C
    You have to BOIL IT as well !
    so
    look up the specific heat of water, call it C
    then LOOK UP THE HEAT OF VAPORIZATION of water.

    then
    heat in = 2 * specifc heat * (100-37)
    +
    2 * heat of vaporization of 1 kg of water

  2. maya

    310800

Respond to this Question

First Name

Your Answer

Similar Questions

  1. chemistry HELP

    A 46.2 gram sample of copper is heated to 95.4 degrees celcius and then place into a calorimeter containing 75.0 grams of water at 19.6 degrees celcius. The final temp of the water and copper is 21.8 degrees celcius. Calculate the …
  2. chemistry

    How long would it take for 1.50mol of water at 100.0 degrees to be converted completely into steam if heat were added at a constant rate of 23.0J/s ?
  3. science

    tori wants to increase the tempreature of 500 grams of water from 20 degrees celcius to 100 degrees celecius if the specific heat of water is 4.18j/g. degrees celcius how much heat is needed ?
  4. Chemistry

    calculate the amount of heat energy in joules to condense 125g of steam at 100 degrees celcius and cool to the liquid to 15 degrees celcius?
  5. Chemistry

    Calculate the amount of heat in joules required to heat 43 grams of water from 28 degrees celcius to the normal boiling point 100 degrees celcius
  6. Food Chemestry

    A heat exchanger is used to warm apple cider using steam as the heat source. The cider is heated from an initial temperature of 4 degrees celcius to a final temperature of 65 degree celcius. The steam enters the heat exchanger as 50% …
  7. science

    A heat exchanger is used to warm apple cider using steam as the heat source. The cider is heated from an initial temperature of 4 degrees celcius to a final temperature of 65 degree celcius. The steam enters the heat exchanger as 50% …
  8. chemistry

    calculate the heat energy required to raise the temperature of a 500. gram iron pipe from 25 degress celcius to 100 degrees celcius. the specific heat for iron is .45 J/g degrees celcius
  9. Physics

    Which needs more energy: to heat 5 kg of copper from 20 degrees celcius to 50 degrees celcius or to heat 0.5 kg of water from 20 degrees celcius to 50 degrees celcius?
  10. Chemistry-Dr.Bob

    An unknown piece of metal weighing 100. g is heated to 90.0 degrees Celcius. It is dropped into 250 g of water at 20.0 degrees Celcius. When equilibrium is reached, the temperature of both the water and piece of metal is 29.0 degrees …

More Similar Questions