The specific heat of water is 4.18 J/gºC. How many Joules of heat are released to lower the temperature of 150 g of water
from 100 °C to 5°C?
Enter the answer
Check it

Q = 59565 [J]

Explanation:

In order to calculate the amount of thermal energy needed we must use the following equation.

where:

m = mass = 150 [g]

Cp = 4.18 [J/g*°C]

Tfinal = 5 [°C]

Tinitial = 100 [°C]

Now replacing:

see earlier answer

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.