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Please help complete the table. Based on the experiment that was conducted. The

ID: 570399 • Letter: P

Question

Please help complete the table. Based on the experiment that was conducted. The unknown metal was placed in 40 mL of water.

Trial 1: Time (minutes)

Trial 1:

Temp (°C)

Trial 2: Time (minutes)

Trial 2:

Temp (°C)

Trial 3: Time (minutes)

Trial 3:

Temp (°C)

Metal: Initial

102

Metal: Initial

99

Metal: Initial

98

Calorimeter: initial

32

Calorimeter: initial

34

Calorimeter: initial

29

Calorimeter + Metal: 1 min

36

Calorimeter + Metal: 1 min

39

Calorimeter + Metal: 1 min

31

Calorimeter + Metal: 2 min

42

Calorimeter + Metal: 2 min

40

Calorimeter + Metal: 2 min

36

Calorimeter + Metal: 3 min

45

Calorimeter + Metal: 3 min

42

Calorimeter + Metal: 3 min

39

Calorimeter + Metal: 4 min

46

Calorimeter + Metal: 4 min

44

Calorimeter + Metal: 4 min

41

Calorimeter + Metal: 5 min

48

Calorimeter + Metal: 5 min

46

Calorimeter + Metal: 5 min

43

DT for water

DT for water

DT for water

DT for metal

DT for metal

DT for metal

Mass of water: 40 (g)

Specific Heat capacity of water (J/g°C):

Calculation for Qwater:

Mass of metal (g): 19

Qmetal = - Qwater =

Calculation for Csp of metal (Trial 1):

Calculation for Csp of metal (Trial 2):

Calculation for Csp of metal (Trial 3):

Average Csp of metal:

Identity of Metal (extra credit):

*include evidence/explanation below table

Trial 1: Time (minutes)

Trial 1:

Temp (°C)

Trial 2: Time (minutes)

Trial 2:

Temp (°C)

Trial 3: Time (minutes)

Trial 3:

Temp (°C)

Metal: Initial

102

Metal: Initial

99

Metal: Initial

98

Calorimeter: initial

32

Calorimeter: initial

34

Calorimeter: initial

29

Calorimeter + Metal: 1 min

36

Calorimeter + Metal: 1 min

39

Calorimeter + Metal: 1 min

31

Calorimeter + Metal: 2 min

42

Calorimeter + Metal: 2 min

40

Calorimeter + Metal: 2 min

36

Calorimeter + Metal: 3 min

45

Calorimeter + Metal: 3 min

42

Calorimeter + Metal: 3 min

39

Calorimeter + Metal: 4 min

46

Calorimeter + Metal: 4 min

44

Calorimeter + Metal: 4 min

41

Calorimeter + Metal: 5 min

48

Calorimeter + Metal: 5 min

46

Calorimeter + Metal: 5 min

43

DT for water

DT for water

DT for water

DT for metal

DT for metal

DT for metal

Mass of water: 40 (g)

Specific Heat capacity of water (J/g°C):

Calculation for Qwater:

Mass of metal (g): 19

Qmetal = - Qwater =

Calculation for Csp of metal (Trial 1):

Calculation for Csp of metal (Trial 2):

Calculation for Csp of metal (Trial 3):

Average Csp of metal:

Identity of Metal (extra credit):

*include evidence/explanation below table

Explanation / Answer

Density of water = 1 grams/ ml., Specific heat capacity of water = 4.18 Joules / g 0 C

Calculation of Qwater = heat gained by water = mass of water * specific heat of water * (Final temperature - initial temperature)

Trial 1: Initial temperature of water = 32 0 C, Final temperature = 48 0 C (after 5 minutes)

Qwater = 40 grams * 4.18 Joules / g 0 C * (48-32) 0 C = 2675.2 Joules

Trial 2: Qwater = 40 grams * 4.18 Joules / g 0 C * (46-34) 0 C = 2006.4 Joules

Trial 3: Qwater = 40 grams * 4.18 Joules / g 0 C * (43-29) 0 C = 2340.8Joules

Average value of Qwater= (2675.2 + 2006.4 +2340.8) / 3 Joules = 2340.8 Joules

Heat released by metal = Qmetal = - Qwater = -2340.8 Joules

Heat released by metal = Qmetal = mass of metal * specific heat of water (Csp) * (Final temperature - initial temperature)

Trial 1: Qmetal = 19 grams * Csp Joules/ grams 0 C * ( 48-102) 0 C = -1026 * Csp Joules

-1026* Csp = - Qwater = -2675.2,        Csp = 2.60 Joules/ grams 0 C

Trial 2: Qmetal = 19 grams * Csp Joules/ grams 0 C * ( 46-99) 0 C = -1007 * Csp Joules

-1007 * Csp = - 2006.4,    Csp = 1.99 Joules/ grams 0 C

Trial 3: Qmetal = 19 grams * Csp Joules/ grams 0 C * ( 43-98) 0 C = -1045 * Csp Joules

-1045 * Csp = -2340.8,     Csp = 2.24 Joules/ grams 0 C

Average value of Csp = (2.60 + 1.99 + 2.24) Joules/ grams 0 C = 2.28 Joules/ grams 0 C

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