Question

Почему может не совпадать количество отданной и полученной теплот

Answer 1

Не совпадает потому что в реальных условиях нет замкнутых систем, а если их нет то неизбежно будут потери энергии 

Answer 2

Потому что отданой меньше чем получимой

Answer 3

Possible Reasons for the Discrepancy in the Amount of Given and Received Heat

When the amount of heat given and received does not match, several factors could contribute to this discrepancy. Here are some possible reasons:

1. Incomplete Transfer: - The discrepancy in the amount of given and received heat could be due to incomplete transfer during the process.

2. Losses in the System: - Heat losses in the system, such as through radiation, conduction, or convection, can lead to a difference between the given and received heat.

3. Measurement Errors: - Errors in the measurement of heat given and received, including inaccuracies in instruments or techniques, may result in a discrepancy.

4. Change in State: - If there is a change in the state of the substance during the process, such as a phase change, the discrepancy in the amount of given and received heat can occur.

5. Other Factors: - Other factors, such as chemical reactions or changes in the surroundings, can also contribute to the difference between the given and received heat.

6. Thermodynamic Considerations: - From a thermodynamic perspective, the discrepancy in the amount of given and received heat can be attributed to various factors related to the specific process and the properties of the substances involved.

7. Mathematical Relationships: - Mathematical relationships, such as the first law of thermodynamics, can also provide insights into the reasons for the difference in the amount of given and received heat.

8. Sign Conventions: - The discrepancy may also arise due to the consideration of sign conventions in heat transfer calculations, where the direction of heat flow and the associated signs of heat transfer are crucial in determining the net heat transfer.

9. Heat Transfer Mechanisms: - Understanding the mechanisms of heat transfer, including conduction, convection, and radiation, can shed light on the factors influencing the discrepancy in given and received heat.

10. Thermodynamic Processes: - Different thermodynamic processes, such as isothermal, adiabatic, or isobaric processes, can result in variations in the amount of given and received heat.

In summary, the discrepancy in the amount of given and received heat can stem from a variety of factors, including incomplete transfer, losses in the system, measurement errors, changes in state, thermodynamic considerations, mathematical relationships, sign conventions, heat transfer mechanisms, and specific thermodynamic processes.