Chemistry

Suppose you use 135 calories of energy to perform a task, how many joules have you used? See, I don't want the answer, just the steps leading me up to the answer, like how to figure this problem out wiht out using a coverting system.


Assuming you are using energy calories, not food Calories, then

135 calories* 4.18J/cal= ...


so you are saying that there is 4.18 joules in 1 calorie, how many joules are in energy. I have my answer it is 564.3 using sinficant figures it is 564


564 Joules is corre ct.

  1. 👍 0
  2. 👎 0
  3. 👁 413

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    What is the heat required in kilocalories to convert 2 kg of ice at 0°C completely into steam at 100°C? -80 Calories -1440 Calories -4186 Calories -540 Calories Thanks!

  2. Science

    A 54-kg jogger is running at a rate of 3m/s. What is the kinetic energy of the jogger. A. 18 Joules B. 81 Joules C. 162 Joules D. 243 Joules

  3. math

    The average number of calories in a 1.5 ounce chocolate bar is 225. Suppose that the distribution of calories is approximately normal with standard deviation =10. Find the probability that a randomly selected chocolate bar will

  4. physics

    While you sleep, your body is using energy at a rate of 77 W. How many food calories are used during an eight hour period? One food calorie is equal to 4186 joules.

  1. physics

    An object with a mass of 5 kg is thrown with an initial velocity of 6 m/s. If the object has an initial height of 10 meters above the ground, what is the magnitude of the initial gravitational potential energy of the object? The

  2. Math

    Mackenzie solved the problem 1.35×1.4. Which shows the correct work to find the product? A. ( 135 × 1 10 ) × ( 14 × 1 10 ) ( 135 × 14 ) × ( 1 10 × 1 10 ) B. ( 135 × 1 100 ) × ( 14 × 1 10 ) ( 135 × 14 ) × ( 1 100 × 1

  3. Chemistry

    A bullet weighing 235 grains is moving at a speed of 2.52 X 10^3 ft/s. Calculate the kinetcic energy of the bullet in joules ahd in calories. One grain equals 0.0648 g. Can someone help me out on this please K. E.= 1/2 mv2 .

  4. science

    The specific heat of silver is 0.057 calories/gram°C. If 10.0 grams of silver were heated and the temperature of the sample changed by 20.0°C, how many calories of heat energy were absorbed by the sample? (A)3,508 calories

  1. Physics

    Suppose the skin temperature of a naked person is 34°C when the person is standing inside a room whose temperature is 25°C. The skin area of the individual is 2.0 m2 a) Assuming the emissivity is 0.80, find the net loss of

  2. physics

    What is the initial electric potential energy of an electron leaving a 200-volt battery if the charge of an electron is 1.602×10−19 coulombs? 8.01×10−20 joules 3.204×10−19 joules 8.01×10−22 joules 3.204×10−17 joules

  3. Physics

    Bicyclists in the Tour de France do enormous amounts of work during a race. For example, the average power per kilogram generated by seven-time-winner Lance Armstrong (m = 75.0 kg) is 6.50 W per kilogram of his body mass. (a) How

  4. algebra

    6. Half a pepperoni pizza plus three fourths of a ham-and-pineapple pizza contains 765 Calories. One fourth of a pepperoni pizza plus a whole ham-and-pineapple pizza contains 745 Calories. How many Calories are in a whole

You can view more similar questions or ask a new question.