ta039449
contestada

a student 600 ml cup of cocoa gets cold. It was only 25°C. He put it in the microwave. How many calories must transfer to the cocoa to bring it up to 70°C

Respuesta :

shinmin

To get the answer, you must know first the formula for heat.

Heat = mass X specific heat X change in temp 

We know that the mass is 600

Specific heat is 1

And the change in temperature is 70 – 25 which is 45.

Now plugging in those values:

 

Heat = 600 x 1 x 45 = 27,000 calories


Note: calorie is a unit of heat

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