Question

A perfectly insulated thermos contains 0.300 kg of water initially at 50 degrees C. A mass...

A perfectly insulated thermos contains 0.300 kg of water initially at 50 degrees C. A mass os of 0.100 kg of water initially at 10 degrees C is added. Ignore any heat exchanges with the outside environment. Take the specific heat capacity of liquid water as 4190 J/kgK. A) Draw a diagram for the situation, indicating the relative masses and temperatures. B) Find the final temperature of the combined water after they have mixed and attained thermal equilibrium (HINT: equate the sum of the heat transfers from the two quantities of water to zero and solve for the final temperature). C) In a separate perfectly insulate thermos containing 0.300 kg of water initially at 50 degrees C, ice at -20 degrees C will be added until the final temperature of the system is 0 degrees C. Draw a diagram for the situation, indicating the relative masses and temperatures. D) Find the mass of ice that must be added to reach the final temperature of 0 degrees C. Take the specific heat capacity of ice as 2.0x10^3 J/kgK, and its latent heat of fusion as 3.34x10^5 J/kgK. Hint: equate the sum of the three heat transfers to zero and find the unknown mass.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
An insulated beaker with negligible mass contains liquid water with a mass of 0.290 kg and...
An insulated beaker with negligible mass contains liquid water with a mass of 0.290 kg and a temperature of 72.4 degrees C. How much ice at a temperature of -11.2 degrees C must be dropped into the water so that the final temperature of the system will be at 33.0 degrees C? Take the specific heat of liquid water to be at 4190 J/kg • K, the specific heat of ice to be 2100 J/kg • K, and the heat...
An insulated Thermos contains 115 g of water at 78.7 ˚C. You put in a 10.0...
An insulated Thermos contains 115 g of water at 78.7 ˚C. You put in a 10.0 g ice cube at 0.00 ˚C to form a system of ice + original water. The specific heat of liquid water is 4190 J/kg•K; and the heat of fusion of water is 333 kJ/kg. What is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?
An insulated Thermos contains 113 g of water at 77.3 ˚C. You put in a 10.3...
An insulated Thermos contains 113 g of water at 77.3 ˚C. You put in a 10.3 g ice cube at 0.00 ˚C to form a system of ice + original water. The specific heat of liquid water is 4190 J/kg•K; and the heat of fusion of water is 333 kJ/kg. What is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?
An insulated Thermos contains 119 g of water at 75.1 ˚C. You put in a 9.16...
An insulated Thermos contains 119 g of water at 75.1 ˚C. You put in a 9.16 g ice cube at 0.00 ˚C to form a system of ice + original water. The specific heat of liquid water is 4190 J/kg•K; and the heat of fusion of water is 333 kJ/kg. What is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?
0.100 kg of water at 10∘C is added to 0.300 kg of soup at 50∘C. Assume...
0.100 kg of water at 10∘C is added to 0.300 kg of soup at 50∘C. Assume complete transfer of thermal energy from soup to the water, with no transfer of energy to the environment. Specific heat of water is 4180 J/kg⋅∘C. The soup has the same specific heat as water. A) Determine the final temperature? Express in Celsius B) Estimate the entropy change of this water-soup system during the process using the actual temperatures to determine the heat transferred and...
An insulated beaker with negligible mass contains a mass of 0.200 kg of water at a...
An insulated beaker with negligible mass contains a mass of 0.200 kg of water at a temperature of 81.7 ∘C. How many kilograms of ice at a temperature of − 21.1 ∘C must be dropped in the water to make the final temperature of the system 30.8 ∘C? Take the specific heat for water to be 4190 J/(kg⋅K) , the specific heat for ice to be 2100 J/(kg⋅K) , and the heat of fusion for water to be 334 kJ/kg...
An insulated beaker with negligible mass contains a mass of 0.350 kg of water at a...
An insulated beaker with negligible mass contains a mass of 0.350 kg of water at a temperature of 69.4 ∘C. How many kilograms of ice at a temperature of − 14.7 ∘C must be dropped in the water to make the final temperature of the system 29.3 ∘C? Take the specific heat for water to be 4190 J/(kg⋅K) , the specific heat for ice to be 2100 J/(kg⋅K) , and the heat of fusion for water to be 334 kJ/kg...
An insulated beaker with negligible mass contains liquid water with a mass of 0.225 kg and...
An insulated beaker with negligible mass contains liquid water with a mass of 0.225 kg and a temperature of 68.8 ∘C . Take the specific heat of liquid water to be 4190 J/kg⋅K , the specific heat of ice to be 2100 J/kg⋅K , and the heat of fusion for water to be 3.34×105 J/kg . How much ice at a temperature of -15.3 ∘C∘C must be dropped into the water so that the final temperature of the system will...
An insulated beaker with negligible mass contains liquid water with a mass of 0.345 kg and...
An insulated beaker with negligible mass contains liquid water with a mass of 0.345 kg and a temperature of 76.5 ∘C . How much ice at a temperature of -19.9 ∘C must be dropped into the water so that the final temperature of the system will be 27.0 ∘C ? Take the specific heat of liquid water to be 4190 J/kg⋅K , the specific heat of ice to be 2100 J/kg⋅K , and the heat of fusion for water to...
An insulated beaker with negligible mass contains liquid water with a mass of 0.235 kg and...
An insulated beaker with negligible mass contains liquid water with a mass of 0.235 kg and a temperature of 68.6 ∘C . How much ice at a temperature of -20.0 ∘C must be dropped into the water so that the final temperature of the system will be 25.0 ∘C ? Take the specific heat of liquid water to be 4190 J/kg⋅K , the specific heat of ice to be 2100 J/kg⋅K , and the heat of fusion for water to...