chemistry

posted by .

If all of the chemical potential energy stored in a 100 Calorie snack pack was converted to thermal energy and subsequently absorbed by water, what would be the final temperature of the water? Assume you have a 1.5 mole sample of water initially at 25 degrees C. The specific heat of water is 4.184 J/g degrees C.

  • chemistry -

    A 100 Calorie food snack pack actually is 100,000 "real" calories (the so-called big calorie is a kilocalorie). So,
    q = mass x specific heat x (Tfinal-Tinitial).
    You need to change 100,000 calories to joules (4.184 Joules = 1 calorie). You need to change 1.5 mole water to grams. Tfinal is the unknown and Tinitial is 25.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    Couze The water in the buket has some energy (tempreture) it is absorbed by the water and the ice melts this way water cools...now if you consider the ice outside the bucket water will no longer be in tuch with ice ,since energy of …
  2. ap chemistry

    a battery operated tool, such as a cordless drill, converts... a.) electrostatic energy to chemical potential energy b.) mechanical energy to thermal energy c.) thermal energy to mechanical energy d.) thermal energy to chemical potential …
  3. Physics

    A raindrop (mass 1.00 g) is travelling at a speed of 40m/s when it hits the surface of 100 g of water contained in a drinking glass. What is the change in temperature of the water in the glass if we assume that a) all the kinetic energy …
  4. Physics

    The stored electrical energy of a 800-ƒÊ F capacitor charged to 1.20~104 Volts is converted to thermal energy by discharging the capacitor through a heating element submerged in 711.6 g of water in an insulating cup. What is the …
  5. Physics

    The stored electrical energy of a 350-μ F capacitor charged to 1.20×104 Volts is converted to thermal energy by discharging the capacitor through a heating element submerged in 548.0 g of water in an insulating cup. What is the …
  6. physics

    water flow over a falls 12.5m high. If the potential energy of the water is all converted to thermal energy calculate the temperature difference between the water at the top and buttom of the falls.
  7. Physics

    A certain mass of water at the top of Niagara Falls has a temperature of +10.0 degrees Celsius. It falls a distance of 50m. Assuming that all its potential energy is converted into thermal energy, calculate the temperature of the mass …
  8. Science (energy)

    1. What similarities do nuclear energy and chemical energy share?
  9. Chemistry

    A cold pack manufacturer has decided to change the chemical in their cold pack from ammonium nitrate to ammonium chloride, a safer chemical. The original cold pack formulation used 100.0g of room temperature (27.0C) water and 35 g …
  10. science

    The Hoover dam is a hydroelectric power plant that converts the energy of falling water into electricity. Which of the following determines the amount of potential energy of the water stored in the reservoir of the dam?

More Similar Questions