Heat Released During Cooling

Oct 13, 2025 by miodeya.com 113 views

Introduction

In this article, we will explore the cooling process of a sample of tin, focusing on the heat released as its temperature decreases from 15.0°C to -10.0°C. We will use the specific heat capacity of tin, given as 0.227 J/g°C, to calculate the heat released during this process.

Specific Heat Capacity

The specific heat capacity of a substance is the amount of heat energy required to raise the temperature of a unit mass of the substance by one degree Celsius. In this case, the specific heat capacity of tin is 0.227 J/g°C, which means that 0.227 joules of heat energy are required to raise the temperature of 1 gram of tin by 1 degree Celsius.

Heat Released During Cooling

When a substance cools, it releases heat energy into its surroundings. The amount of heat released can be calculated using the formula:

Q = mcΔT

where Q is the heat released, m is the mass of the substance, c is the specific heat capacity, and ΔT is the change in temperature.

Calculating the Heat Released

Let's calculate the heat released by the sample of tin as it cools from 15.0°C to -10.0°C.

First, we need to find the change in temperature (ΔT):

ΔT = T_initial - T_final = 15.0°C - (-10.0°C) = 25.0°C

Next, we can plug in the values into the formula:

Q = mcΔT = (mass of tin) × (0.227 J/g°C) × (25.0°C)

However, we are not given the mass of the tin sample. Fortunately, we are given the amount of heat released (543 J). We can use this information to find the mass of the tin sample.

Finding the Mass of the Tin Sample

We can rearrange the formula to solve for the mass of the tin sample:

m = Q / (cΔT) = 543 J / (0.227 J/g°C × 25.0°C) = 95.5 g

Conclusion

In this article, we explored the cooling process of a sample of tin, focusing on the heat released as its temperature decreased from 15.0°C to -10.0°C. We used the specific heat capacity of tin to calculate the heat released during this process and found that the mass of the tin sample was 95.5 g.

Understanding the Cooling Process

The cooling process of a substance is an important concept in chemistry, as it is related to the heat transfer between the substance and its surroundings. By understanding the cooling process, we can better appreciate the behavior of substances in different temperature ranges.

Heat Transfer

Heat transfer is the process by which energy is transferred from one body to another due to a temperature difference. There are three types of heat transfer: conduction, convection, and radiation.

Conduction: Heat transfer through direct contact between particles.
Convection: Heat transfer through the movement of fluids.
Radiation: Heat transfer through electromagnetic waves.

Applications of Heat Transfer

Heat transfer has many practical applications in our daily lives, including:

Refrigeration: Heat transfer is used to cool substances and maintain a low temperature.
Heating: Heat transfer is used to warm substances and maintain a high temperature.
Power generation: Heat transfer is used to generate electricity in power plants.

Conclusion

Introduction

In our previous article, we explored the cooling process of a sample of tin, focusing on the heat released as its temperature decreased from 15.0°C to -10.0°C. We used the specific heat capacity of tin to calculate the heat released during this process and found that the mass of the tin sample was 95.5 g. In this article, we will answer some frequently asked questions related to the cooling process of a sample of tin.

Q: What is the specific heat capacity of tin?

A: The specific heat capacity of tin is 0.227 J/g°C. This means that 0.227 joules of heat energy are required to raise the temperature of 1 gram of tin by 1 degree Celsius.

Q: How is the heat released during cooling calculated?

A: The heat released during cooling is calculated using the formula:

Q = mcΔT

where Q is the heat released, m is the mass of the substance, c is the specific heat capacity, and ΔT is the change in temperature.

Q: What is the change in temperature (ΔT) in this case?

A: The change in temperature (ΔT) is the difference between the initial temperature and the final temperature. In this case, the initial temperature is 15.0°C and the final temperature is -10.0°C, so the change in temperature is:

ΔT = T_initial - T_final = 15.0°C - (-10.0°C) = 25.0°C

Q: How is the mass of the tin sample calculated?

A: The mass of the tin sample is calculated using the formula:

m = Q / (cΔT)

where Q is the heat released, c is the specific heat capacity, and ΔT is the change in temperature. In this case, the heat released is 543 J, the specific heat capacity is 0.227 J/g°C, and the change in temperature is 25.0°C.

Q: What is the mass of the tin sample?

A: The mass of the tin sample is 95.5 g.

Q: What are some practical applications of heat transfer?

A: Heat transfer has many practical applications in our daily lives, including:

Refrigeration: Heat transfer is used to cool substances and maintain a low temperature.
Heating: Heat transfer is used to warm substances and maintain a high temperature.
Power generation: Heat transfer is used to generate electricity in power plants.

Q: What are the three types of heat transfer?

A: The three types of heat transfer are:

Conduction: Heat transfer through direct contact between particles.
Convection: Heat transfer through the movement of fluids.
Radiation: Heat transfer through electromagnetic waves.

Conclusion

In conclusion, the cooling process of a sample of tin is an important concept in chemistry, as it is related to the heat transfer between the substance and its surroundings. By understanding the cooling process, we can better appreciate the behavior of substances in different temperature ranges. We hope that this Q&A article has provided you with a better understanding of the cooling process of a sample of tin.