Question

An ice cube is placed in a glass of room temperature. In which direction will heat flow? What happens to the ice cube's molecules as heat flows? What happens to the water's molecules as heat flows?

Answer #1

According to the thermodynamics law heat always flow from hot to cool object.

So the heat in this case will flow from room environment to ice cube ..

As the heat flow from environment to ice cube the ice starts to melt and phase change occurs and ice becomes water at 0°c . Here latent heat is supplied by the environment which is responsible only for the phase change not for change in temperature.

Then when all the ice converted to water then heat from environment flow untill the temperature of water and the environment comes in equilibrium.

So after phase conversion the heat flows to water will change its temperature..

A cube of ice is taken from the freezer at -8.5 ∘C and placed in
a 85-g aluminum calorimeter filled with 320 g of water at room
temperature of 20.0 ∘C. The final situation is observed to be all
water at 15.0 ∘C. The specific heat of ice is 2100 J/kg⋅C∘, the
specific heat of aluminum is 900 J/kg⋅C∘, the specific heat of
water is is 4186 J/kg⋅C∘, the heat of fusion of water is 333 kJ/Kg.
What was the...

A cube of ice is taken from the freezer at -6.5 ?C and placed in
a 85-g aluminum calorimeter filled with 300 g of water at room
temperature of 20.0 ?C. The final situation is observed to be all
water at 17.0 ?C. The specific heat of ice is 2100 J/kg?C?, the
specific heat of aluminum is 900 J/kg?C?, the specific heat of
water is is 4186 J/kg?C?, the heat of fusion of water is 333 kJ/Kg.
a)What was the...

A cube of ice is taken from the freezer at -5.5 ∘C and placed in
a 85-g aluminum calorimeter filled with 300 g of water at room
temperature of 20.0 ∘C. The final situation is observed to be all
water at 16.0 ∘C. The specific heat of ice is 2100 J/kg⋅C∘, the
specific heat of aluminum is 900 J/kg⋅C∘, the specific heat of
water is is 4186 J/kg⋅C∘, the heat of fusion of water is 333 kJ/Kg.
What was the...

A 80 g ice cube at -53°C is placed in a lake whose temperature
is 44°C. Calculate the change in entropy of the cube-lake system as
the ice cube comes to thermal equilibrium with the lake. The
specific heat of ice is 2220 J/kg·K. (Hint: Will the ice cube
affect the temperature of the lake?)

A 49 g ice cube at -69°C is placed in a lake whose temperature
is 32°C. Calculate the change in entropy of the cube-lake system as
the ice cube comes to thermal equilibrium with the lake. The
specific heat of ice is 2220 J/kg·K. (Hint: Will the ice
cube affect the temperature of the lake?)

A 49 g ice cube at -37°C is placed in a lake whose temperature
is 77°C. Calculate the change in entropy of the cube-lake system as
the ice cube comes to thermal equilibrium with the lake. The
specific heat of ice is 2220 J/kg·K. (Hint: Will the ice cube
affect the temperature of the lake?)

A cube of ice is taken from the freezer at -9.5 ∘C and placed in
a 95-g aluminum calorimeter filled with 320 g of water at room
temperature of 20.0 ∘C. The final situation is observed to be all
water at 15.0 ∘C. The specific heat of ice is 2100 J/kg⋅C∘, the
specific heat of aluminum is 900 J/kg⋅C∘, the specific heat of
water is is 4186 J/kg⋅C∘, the heat of fusion of water is 333
kJ/Kg.
What was the...

A cube of ice is taken from the freezer at -9.5 ?Cand placed in
a 95-g aluminum calorimeter filled with 330 g of water at room
temperature of 20.0 ?C. The final situation is observed to be all
water at 17.0 ?C. The specific heat of ice is 2100 J/kg?C?, the
specific heat of aluminum is 900 J/kg?C?, the specific heat of
water is is 4186 J/kg?C?, the heat of fusion of water is 333
kJ/Kg.
What was the mass...

A cube of ice is taken from the freezer at -6.5 ∘C and placed in
a 95-g aluminum calorimeter filled with 300 g of water at room
temperature of 20.0 ∘C. The final situation is observed to be all
water at 16.0 ∘C. The specific heat of ice is 2100 J/kg⋅C∘, the
specific heat of aluminum is 900 J/kg⋅C∘, the specific heat of
water is is 4186 J/kg⋅C∘, the heat of fusion of water is 333
kJ/Kg.
Part A What...

A cube of ice is taken from the freezer at -8.5 ∘C and placed in
a 85-g aluminum calorimeter filled with 320 g of water at room
temperature of 20.0 ∘C. The final situation is observed to be all
water at 15.0 ∘C. The specific heat of ice is 2100 J/kg⋅C∘, the
specific heat of aluminum is 900 J/kg⋅C∘, the specific heat of
water is is 4186 J/kg⋅C∘, the heat of fusion of water is 333
kJ/Kg.

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