Heat Capacity and Temperature change

In summary, the question is about finding the final temperature when a 5 kg piece of low carbon steel at 25°C is placed in contact with a 300g piece of polyethylene at 180°C. The specific heat capacities for each material are given as 480 j/kg.K and 1.8 x 10^3 j/kg.K respectively.
  • #1
A.Carpenter
2
0
I know how to do heat capacity problems but i am unsure of how to do them when two materials are combined together. Here is the question. Any help would be great, thanks.

A 5 kg pieces of low carbon steel at room temperature 25°C is placed into contact with a 300g piece of polyethylene at 180°C . What is the final temperature?

Low carbon steel Cp = 480 j/kg.K
Polyethylene Cp = 1.8 x 10^3 j/kg.K
 
Last edited:
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  • #2
hey mate, just letting you know that your values with regard to each material have not come up correctly, there are just squares next to the numbers.
 
  • #3
oh cheers, is that any better? i changed them
 

1. What is heat capacity?

Heat capacity is the amount of heat energy required to raise the temperature of a substance by one degree Celsius. It is often denoted by the symbol "C" and is measured in units of Joules per degree Celsius (J/°C).

2. How is heat capacity related to temperature change?

Heat capacity is directly proportional to the amount of temperature change. This means that the greater the heat capacity of a substance, the more heat energy is required to produce a specific temperature change.

3. What factors affect heat capacity?

The main factors that affect heat capacity are the mass and composition of the substance, as well as any changes in the physical state of the substance (such as melting or boiling). Different substances have different heat capacities due to their unique molecular structures and properties.

4. How is heat capacity different from specific heat?

Heat capacity is a measure of the total amount of heat energy required to raise the temperature of a substance, while specific heat is a measure of the heat energy required to raise the temperature of a unit mass of a substance. In other words, specific heat is heat capacity per unit mass.

5. How is heat capacity used in real-world applications?

Heat capacity is used in various industries, such as in cooking and food processing, where precise temperature control is important. It is also crucial in fields such as thermodynamics and materials science, where it is used to study the behavior and properties of different substances under different temperature conditions.

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