Answer:
To calculate the amount of heat energy required to change the temperature of water by 4 degrees Celsius, we can use the specific heat capacity of water, which is 4.18 Joules per gram per degree Celsius.
Here are the steps to calculate the amount of heat energy required:
- Determine the mass of water that needs to be heated. Let's assume we have 1 liter (1000 grams) of water.
- Determine the change in temperature. In this case, the change in temperature is 4 degrees Celsius.
- Use the formula Q = m x c x ΔT, where Q is the amount of heat energy required, m is the mass of water, c is the specific heat capacity of water, and ΔT is the change in temperature.
Plug in the values and solve for Q:
Q = 1000 g x 4.18 J/g°C x 4°C
Q = 16,720 Joules
- Therefore, the amount of heat energy required to change the temperature of 1 liter of water by 4 degrees Celsius is 16,720 Joules.
It is important to note that this calculation assumes that all of the heat energy is transferred directly to the water and that there are no heat losses to the surroundings. In reality, some heat energy will be lost to the environment, so the actual amount of heat energy required may be slightly higher.