A 5.53E+1 g sample of water at 9.967E+1 °C is placed in a constant pressure calorimeter....
A 5.53E+1 g sample of water at 9.967E+1 °C is placed in a constant pressure calorimeter. Then, 2.33E+1 g of zinc metal at 2.17E+1 °C is added to the water and the temperature drops to 9.63E+1 °C. What is the specific heat capacity of the zinc metal measured in this experiment?
Homework Answers
Q = mc∆T
Q = heat energy (Joules, J), m = mass of a substance (g)
c = specific heat (units J/g∙oC), ∆ is a symbol meaning "the change in"
∆T = change in temperature (oC Celcius)
The heat lost from water = The heat gained by Zinc
For Water
m = 55.3 gm c = 4.184 J/g∙oC ∆T = 99.67 oC - 96.3 oC = 3.37 oC
For Zinc
m = 23.3 gm c = ? J/g∙oC ∆T = 96.3 oC - 21.7 oC = 74.6 oC
55.3 x 4.184 J/g∙oC x 3.37 oC = 23.3 gm x Sp ht of Zn x 74.6 oC
Sp ht of Zn = 779.73 Joules / 1738.18 g∙oC = 0.44859 J/g∙oC
specific heat capacity of the zinc metal measured in this experiment is 0.44859 J/g∙oC
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In the laboratory a "coffee cup calorimeter, or constant pressure calorimeter, is frequently used to determine...
In the laboratory a "coffee cup calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase reaction. Since the cup itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. This is known as calibrating the calorimeter and the value determined is called the calorimeter constant One way to do this is to use a common metal of...
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Use the References to access importante In the laboratory a "coffee cup" calorimeter, or constant pressure...
Use the References to access importante In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase reaction A student heats 63.65 grams of tungsten to 97.83 °C and then drops it into a cup containing 83.85 grams of water at 24.54 °C. She measures the final temperature to be 26.21 °C The heat capacity of the calorimeter (sometimes referred...
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A 32.0-g sample of an unknown metal at 99°C was placed in a constant-pressure calorimeter containing 60.0 g of water at 24.0°C, The final temperature of the system was found to be 28.4℃ Calculate the specific heat of the metal. (The heat capacity of the calorimeter is 14.4/C) J/g °C
In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase reaction. Thermometer Stirring red A student heats 68.26 grams of titanium to 99.16 °C and then drops it into a cup containing 80.78 grams of water at 23.25 °C. She measures the final temperature to be 30.68 °C. The heat capacity of the calorimeter (sometimes referred to as the...
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Use the References to access importante In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase reaction A student heats 63.65 grams of tungsten to 97.83 °C and then drops it into a cup containing 83.85 grams of water at 24.54 °C. She measures the final temperature to be 26.21 °C The heat capacity of the calorimeter (sometimes referred...
In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase reaction. A student heats 67.53 grams of zinc to 98.12 °C and then drops it into a cup containing 80.36 grams of water at 22.73 °C. She measures the final temperature to be 28.00°C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined...
In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase reaction. A student heats 63.04 grams of silver to 98.96 °C and then drops it into a cup containing 83.17 grams of water at 22.31 °C. She measures the final temperature to be 25.59 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was...
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