Question

A slice of pizza has 500 kcal. If we could burn the pizza and use all the heat to warm a 50-L container of cold water, what would be the approximate increase in the temperature of the water? (Note: A liter of cold water weighs about 1 kg.)

a.50°C c.100°C
b. 5°C d.10°C

Answer 1

Option D, There will be an increase of
`10` degree Celsius in the temperature of the water

Step-by-step explanation:

As we know -

`Q = m*C* dT\\`

Where Q is the total amount of heat produced

m signifies mass of any substance

C signifies specific heat

and dT represents change in temperature

Specific heat of water is 1 calories per gram per degree Celsius

On substituting the given values in above equation, we get -

`500* 1000 = 50000 * 1* dT\\dT = (500000)/(50000) \\dT = 10`

Hence , there will be an increase of approximately
`10` degree Celsius in the temperature of the water