Calculating Heat Required to Raise Water Temperature to 100°C

[rijo664]

The question states.

Peter is heating water on the stove to boil eggs for a picnic. How much heat is required to raise the temperature of his 10.0 kg vat of water from 20.0 degrees celcius too 100 degree celcius.

I worked out my problem in this format

Delta Q= mass times specific heat times that change in temperature.

first i subtracted 100 degree celcius with 20.0 degree celcius and i got 80. idk were to go from here. i am stuck. because i don't have specific heat what am i suppose to do. how am i suppose to know how much heat is requred.

 

[learningphysics]

The question states.

Peter is heating water on the stove to boil eggs for a picnic. How much heat is required to raise the temperature of his 10.0 kg vat of water from 20.0 degrees celcius too 100 degree celcius.

I worked out my problem in this format

Delta Q= mass times specific heat times that change in temperature.

first i subtracted 100 degree celcius with 20.0 degree celcius and i got 80. idk were to go from here. i am stuck. because i don't have specific heat what am i suppose to do. how am i suppose to know how much heat is requred.

Look up the specific heat of water.

 

[m2003]

I can help you solve this problem. The specific heat of water is a constant value, which is approximately 4.186 joules per gram per degree Celsius. Therefore, to calculate the heat required to raise the temperature of 10.0 kg of water from 20.0 degrees Celsius to 100 degrees Celsius, we can use the formula you mentioned: Delta Q = mass x specific heat x change in temperature.

Substituting the values, we get: Delta Q = (10.0 kg) x (4.186 J/g°C) x (100°C - 20.0°C) = 3,349.2 kJ. This is the amount of heat required to raise the temperature of the water to 100 degrees Celsius.

It is important to note that this calculation assumes that all the heat is absorbed by the water and none is lost to the surroundings. In reality, there will be some heat loss to the environment, so the actual amount of heat required may be slightly higher. Additionally, the specific heat of water can vary slightly depending on the temperature, but for practical purposes, the value of 4.186 J/g°C is a good approximation.

I hope this helps you understand how to calculate the heat required to raise the temperature of water. Keep in mind that this formula can be used for any substance, as long as you have the mass, specific heat, and change in temperature. If you have any further questions, feel free to ask. Happy experimenting!