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Category > Chemistry Posted 19 Jun 2017 My Price 7.00

Enthalpy and Specific Heat

See attachment.

 

Table 2: Mass

Mass (g)

Water

49.6 g

Unknown Metal Strip

33.1 g

 

 

 

Table 3: Specific Heat Data

Time (minutes)

Temperature (°C)

Trial 1

Trial 2

Trial 3

Initial

24

23

23

1 minute

25

25

25

2 minutes

27

26

26

3 minutes

28

27

26

4 minutes

28

27

26

5 minutes

28

27

26

Average Specific Heat Capacity of the Unknown Metal:

 

 

Post-Lab Questions

1. Why is ΔTmetal < 0?

2. Why is ΔTwater > 0 ?

3. A metal sample weighing 43.5 g and at a temperature of 100.0 °C was placed in 39.9 g of water in a calorimeter at 25.1 °C. At equilibrium, the temperature of the water and metal was 33.5 °C.

4. What is the average specific heat capacity of the unknown metal in this experiment?

5. What is the unknown metal? Use Table 1 for reference.

Attachments:

Answers

SuperTutor
(15)
Status NEW Posted 19 Jun 2017 02:06 AM My Price 7.00

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