Question

A metal sample weighing 72.1 g is placed in a hot water bath at 95.0 oC. The calorimeter contains 42.3 g of deoinized water. The initial temperature of the water is 22.3 oC. The metal is transferred to the calorimeter and the final temperature reached by the water + metal is 32.2 oC.

A. Calculate ∆T for the water (Tfinal – Tinitial).

B. Calculate ∆T for the metal.

C. The specific heat of water is 4.18 J/goC. Calculate the specific heat of the metal.

Answer #1

3. A sample of metal weighing 35.5g at a temperature of 100 oC
was placed in a calorimeter containing 50 g of water at 25.0 oC. At
equilibrium the temperature of water and metal was 35.5 oC.
Calculate the heat capacity of the metal. . Use this value for
Cp:27.65.
4. When 0.50 g of magnesium metal is placed in a calorimeter,
and 100. mL of 1.0 M HCl were added the temperature of solution
increased from 22.2 oC to...

A 6.40 g sample of iron (specific heat capacity = 0.451 J/g*C)
is placed in a boiling water bath until the temperature of the
metal is 100.0*C. The metal is quickly transferred to 119.0g of
water at 25.0*C in a calorimeter (specific heat capacity of water =
4.18 J/g*C). Determine the final temperature of the water in the
calorimeter (3 significant figures).

A 6.40 g sample of iron (specific heat capacity =0.451 J/g*C) is
placed in a boiling water bath until the temperature of the metal
is 100.0*C. The metal is quickly transferred to 119.0g of water at
25.0*C in a calorimeter (specific heat capacity of water = 4.18
J/g*C). Determine the final temperature of the water in the
calorimeter (3 significant figures).

A
47.5 block of an unknown metal is heated in a hot water bath to 100
degrees Celsius. When the block is placed in an insulated vessel
containing 130.0 g of water at 25.0 degrees Celsius, the final
temperature is 28.0 degrees Celsius. Determine the specific heat of
the unknown metal. The Cs for water is 4.18 J/g degrees
Celsius.

1. A 78.0 g piece of metal at 89.0°C is placed in 125 g of water
at 21.0°C contained in a calorimeter. The metal and water come to
the same temperature at 27.0°C.
- How much heat (in J) did the metal give up to the water?
(Assume the specific heat of water is 4.18 J/g·°C across the
temperature range.)
- What is the specific heat (in J/g·°C) of the metal?
2. A 0.529 g sample of KCl is added...

A coin with a mass of 39.0 g is in a hot‐water bath at 97.00°C.
A calorimeter contains 175 g of water at 10.00°C. The hot coin is
quickly moved and immersed in the cool water in the calorimeter.
After stirring, the water and coin reach a final temperature of
12.00°C.
Calculate the specific heat of the coin in J/(g x degree C)
a. 0.473
b. 0.387
c. 0.540
d. 0.219
e. 0.442

PART A) A sample of metal at a known hot temperature is placed
in to a calorimeter containing water of known mass and known
initial temperature. The temperature of the water rises and the
final temperature of the water is recorded. What equation is used
to calculate the amount of heat the calorimeter water absorbed?
PART B) How do you deermine the amount of heat lost by the metal
if you know the amount of heat gained by the calorimeter...

A 48.2 g sample of a metal is heated to 95.8 degrees C and
placed in a coffee-cup calorimeter containing 79.0 g of water at a
temperature of 18.5 degrees C. After the metal cools, the final
temperature of the metal and water is 22.8 degrees C. Calculate the
specific heat capacity of the metal, assuming that no heat escapes
to the surroundings or is transferred to the calorimeter.

1.)
A volume of 36.7 mL of H2O is initially at 28.0 oC. A chilled
glass marble weighing 4.00 g with a heat capacity of 3.52 J/oC is
placed in the water. If the final temperature of the system is
26.4 oC , what was the initial temperature of the
marble? Water has a density of 1.00 g/mL and a specific heat of
4.18 J/goC.
Enter your answer numerically, to three significant
figures and in terms of oC.
2.)
A 2.24...

A (18) g ice cube at –15.0°C is placed in (126) g of water at
48.0 degreesC. Find the final temperature of the system when
equilibrium is reached. Ignore the heat capacity of the container
and assume this is in a calorimeter, i.e. the system is thermally
insulated from the surroundings. Give your answer in degreesC with
3 significant figures.
Specific heat of ice: 2.090 J/(g∙ oC)
Specific heat of water: 4.186 J/(g∙ oC)
Latent heat of fusion for water:...

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