How to Determine Heat Transfer and Identify Metal Using Calorimetry
How do I determine the heat transferred to the water?
Calculate the heat transferred to the water by using the formula: Q = MCΔT
Given:
- Mass of water (M) = 50.0 g
- Initial temperature (T₁) = 20.0 °C
- Final temperature (T₂) = 27.7 °C
- Specific heat capacity of water (C) = 4.184 J/gºC
Answer
The heat transferred to the water can be calculated as follows:
Q = (50.0 g) × (4.184 J/gºC) × (27.7 °C - 20.0 °C)
Q = 1610.84 J
Therefore, the heat transferred to the water is 1610.84 J.
To determine the heat transferred to the water, you need to consider the mass of the water, its initial and final temperatures, and the specific heat capacity of water. By plugging these values into the formula for heat transfer, you can calculate the amount of heat transferred to the water.
In the given example, the heat transferred to the water is 1610.84 J. This calculation is crucial for understanding how energy is exchanged between the metal block and the water in the calorimetry experiment.
How do I determine the identity of the metal?
Find out the identity of the metal by calculating its specific heat capacity using the formula: Q = MCΔT
Given:
- Heat absorbed by water (Q) = 1610.84 J
- Mass of metal (M) = 200 g
- Initial temperature of metal (T₁) = 90.0 °C
- Final temperature of metal (T₂) = 27.7 °C
Answer
The specific heat capacity of the metal can be calculated as follows:
C = Q / (M × ΔT)
C = 1610.84 J / (200 g × (27.7 °C - 90.0 °C))
C = 0.129 J/gºC
Therefore, the specific heat capacity of the metal is 0.129 J/gºC, indicating that the metal is gold.
To determine the identity of the metal, you need to calculate its specific heat capacity by considering the heat absorbed by the water, the mass of the metal, and its initial and final temperatures. By using the formula for specific heat capacity, you can find out the material of the metal based on its thermal properties.
In the provided example, the specific heat capacity of the metal is calculated to be 0.129 J/gºC, which corresponds to gold. This analysis helps in identifying the metal based on its characteristic heat capacity value.