What is the specific heat of the block?

In summary: OUNT of water = 52.0g + 140.0g = 192.0gIn summary, the specific heat of the block can be determined by using the specific heat of copper and water, along with the mass and temperature changes of the system. By setting up an equation and solving for the unknown specific heat, the value is found to be 3.42 J/gdegree. However, it is noted that this may not be the correct answer and further clarification is needed.
  • #1
jennypear
16
0
The specific heat of a 109-g block of material is to be determined. The block is placed in a 34.0-g copper calorimeter that also holds 52.0 g of water. The system is initially at 20.0°C. Then 140 g of water at 83.0°C are added to the calorimeter vessel. When thermal equilibrium is attained, the temperature of the water is 51.0°C. What is the specific heat of the block?

cu specific heat=.386J/gdegree
water sh=4.18j/gdegree

34g(.386J/gdegree)(31degree) + 52g(4.18J/gdegree)(31degree) +
109g(unknown sh)31degree = 140g(4.18J/gdegree)32degree

406.844J + 6738.16J + 3379g*degree(unknown sh) = 18726.4J
3379g*degree(unknown sh) + 7145.004J = 18726.4J
3379g*degree(unknown sh) = 11581.396J
unknown sh = 3.42 J/gdegree

this isn't the correct answer
thanks for your time
 
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  • #2
jennypear said:
The specific heat of a 109-g block of material is to be determined. The block is placed in a 34.0-g copper calorimeter that also holds 52.0 g of water. The system is initially at 20.0°C. Then 140 g of water at 83.0°C are added to the calorimeter vessel. When thermal equilibrium is attained, the temperature of the water is 51.0°C. What is the specific heat of the block?
It is always easier and clearer to work it out algebraically and then plug in numbers. But your work appears to be correct. What is the 'correct' answer?

AM
 
  • #3


Based on the given information and calculation, the specific heat of the block is approximately 3.42 J/gdegree. However, it is important to note that this is not the correct answer. It is possible that there were errors in the calculation or some information was missing. It is also important to double-check the units and ensure that they are consistent throughout the calculation. Additionally, it may be helpful to consult a reference or textbook to confirm the correct value for the specific heat of the material in question.
 

Related to What is the specific heat of the block?

1. What is specific heat?

Specific heat is a physical property of a substance that measures the amount of heat energy needed to raise the temperature of 1 gram of that substance by 1 degree Celsius.

2. How is specific heat measured?

Specific heat is typically measured using a device called a calorimeter, which measures the amount of heat gained or lost by a substance as it undergoes a temperature change.

3. What is the unit of measurement for specific heat?

The unit of measurement for specific heat is joules per gram per degree Celsius (J/g°C) in the SI system, or calories per gram per degree Celsius (cal/g°C) in the cgs system.

4. Why is specific heat important?

Specific heat is important in many scientific and engineering applications, as it helps determine how much heat is needed to raise the temperature of a substance and how it will respond to changes in temperature.

5. How does the specific heat of a substance affect its temperature change?

The specific heat of a substance affects its temperature change by determining how much heat energy is needed to raise the temperature of that substance. Substances with higher specific heat will require more heat energy to increase their temperature compared to substances with lower specific heat.

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