posted by Brad

1. Given a liter of water just at boiling, how much energy does it take to boil it all?

2. If that liter of water was originally at 10°C, how much extra energy would it take to boil
the water?

Would it be:
1. Q=mL=(1kg)(2.26e6)=2.26e6
2. Q=mC(Tf-Ti)=(1kg)(4186J)(100C-10C)=376740J

  1. damon

    did not check arithmetic but that is the right idea

  2. bobpursley

    Goodness. Your use of units leaves much to be desired. Let units work for you.

    a. energy=Hv*mass=2257kJ/kg*1liter*1kg/liter= 2257kJ

    b. mcDeltaTemp=1kg*4.184kJ/kgC*90C=
    = 90*4.184kJ

Respond to this Question

First Name

Your Answer

Similar Questions

  1. science

    Does water with salt boils faster than plain water Yes, salt increases the waters boiling point and therefore a higher temperature is needed for the water to boil. Salt does, indeed, increase the boiling point of water due to the salt …
  2. Chemistry

    How much boiling water would you need in order to raise the bath to body temperature (about 37)?

    How much energy would it take to warm 30.0 g of water at 35 oC to the boiling point and boil all the liquid away?

    a) How much energy is required to evaporate all the water in a swimming pool of area 158 m2 and depth 4.1 m (b) The intensity of sunlight is about 1080 W/m2. If all of this energy is absorbed by the water in the pool, how long will …
  5. physics

    if you take a 1 liter bottle of water out of the refrigerator at just above 0 celsius., how much heat will it take to raise the water to 90 celsius, so you can make tea out of it.
  6. physics

    The specific heat of mercury is .03cal/g*C, and it's boiling point is 357*C. The specific heat of water is 1 cal/g*C. It takes 65 calories of energy to vaporize one gram of mercury and 540 calories to vaporize one gram of water. If …
  7. physics

    A kettle containing 1 kg of water has just reached its boiling point. How much energy, in joules, is required to boil the kettle dry?
  8. physics

    A pot containing 1.09 liter of water, initially at 18°C, is placed on a 1101 W electric heating element. (a) How much heat must be supplied to the water to bring it to a boil?
  9. chemistry

    We calculated that 30.0 grams of ice initially at -10.0 Celsius and it requires 23.1 kj of energy to bring it all the way to a boil. How much additional energy does it take to convert all of the water to steam at 100 degree Celsius?
  10. Physics

    You and another person go to the museum and decide to take a look at an exhibit that has a bike with an attached heating coil/generator. The coil is placed in a tank of water at 20 deg C. Peddling makes the coil increase the energy …

More Similar Questions