A mass of 2.0 kg of water is heated.The temperature increase of the water is 80 °CThe specific heat capacity of water is 4200 J / kg °CCalculate the change in thermal energy when the water is heated.Use the equation:change in thermal energy = mass × specific heat capacity × temperature change
Question
A mass of 2.0 kg of water is heated.The temperature increase of the water is 80 °CThe specific heat capacity of water is 4200 J / kg °CCalculate the change in thermal energy when the water is heated.Use the equation:change in thermal energy = mass × specific heat capacity × temperature change
Solution
To calculate the change in thermal energy, we use the given equation:
change in thermal energy = mass × specific heat capacity × temperature change
We know that:
- the mass (m) of the water is 2.0 kg,
- the specific heat capacity (c) of water is 4200 J/kg°C,
- the temperature change (ΔT) is 80°C.
Substituting these values into the equation gives:
change in thermal energy = 2.0 kg × 4200 J/kg°C × 80°C
Performing the multiplication gives:
change in thermal energy = 672,000 J
So, the change in thermal energy when the water is heated is 672,000 Joules.
Similar Questions
Cold water from a tap is put into a kettle. The temperature of the water increases from 6 °C to its boiling point of 100 °C. Calculate the change in thermal energy when the mass of water heated is 1.5 kg Specific heat capacity = 4200 J/kg °C
he specific heat capacity of water is 4.2 kJ/kg°C.Calculate the energy required to increase the temperature of 0.60 kg of water from 31°C to 56°C.
A beaker of water is heated by burning a specific quantity of fuel below it. Calculate the energy released by a burning sample of fuel if the temperature of 100g of water was raised by 20°C. (Specific heat capacity of water = 4200 J/kg °C)change in thermal energy = mass of water × specific heat capacity of water × temperature change
A sample of water was heated and allowed to cool down. The energy transferred to the surroundings was 44 100 J and the temperature changed from 50 °C to 15 °C.The specific heat capacity of water is 4200 J/kg°C.What was the mass of the sample of water?You must include units with your answer.
An insulated calorimeter contains 100 g of water at 22 °C. A chemical reaction causes the temperature to increase by 6 °C. Given that water has a specific heat of 4.184 J/g°C, how much heat was transferred to or from the water? Group of answer choices-2.5 kJ-1.5 kJ-2.0 kJ-1.0 kJ
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.