Question

A copper block of mass 17.5 kg initially at 481 K is immersed in 31.5 kg...

A copper block of mass 17.5 kg initially at 481 K is immersed in 31.5 kg of water initially at 298 K.

CP,m(H2O,l)=75.3J⋅K−1⋅mol−1

CP,m(Cu,s)=24.4J⋅K−1⋅mol−1

Assume that the heat capacity of Cu remains constant at its 298.15 K value over the temperature interval of interest.

1) Calculate ΔS for the water.

2) Calculate ΔS for the Cu block.

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
Calculate the minimum work needed to reduce the temperature of a 1.0-g block of copper form...
Calculate the minimum work needed to reduce the temperature of a 1.0-g block of copper form 1.10 K to 0.10 K, the surroundings being at 1.20 K. Proceed by supposing that the heat capacity remains constant at 39 m J K-1 mol-1 and that the coefficient of performance can be evaluated at the mean temperature of the block. Then go on to do a more realistic calculation in which Cp,m = AT3 + BT, with A = 48.2 m J...
A cooper block having a mass of 10 kg and at a temperature of 800 K...
A cooper block having a mass of 10 kg and at a temperature of 800 K is placed in a well-insulated vessel containing 100 kg of water initially at 290 K. Calculate: a) Calculate the entropy change for the block, the water, and the total process. b) What is the maximum amount of work that could have been obtained from the copper block and water in a Carnot engine? The heat capacities are 4.185 kJ/kg/K for water and 0.398 kJ/kg/K...
A 50 kg copper block initially at 350 oC is quenched in a closed, rigid insulated...
A 50 kg copper block initially at 350 oC is quenched in a closed, rigid insulated tank containing 120 L of liquid water at 25 oC. Specific heat of copper, Cc = 385 J/(kgK), specific heat of liquid water, Cw = 4180J/(kgK). (i) Calculate the entropy change (kJ/K) of copper block. (ii) Determine the entropy change (kJ/K) of liquid water.
Consider an isolated system containing two blocks of copper with equal mass. One block is initially...
Consider an isolated system containing two blocks of copper with equal mass. One block is initially at 0oC while the other is at 100oC.They are brought into contact with each other and allowed to thermally equilibrate. What is the entropy change for the system during this process? The heat capacity for copper is Cp = 24.5 [J/mol k]
Please Show all work, thank you! A copper block with a mass of 400 grams is...
Please Show all work, thank you! A copper block with a mass of 400 grams is cooled to 77 K by being immersed in liquid nitrogen. The block is then placed in a Styrofoam cup containing some water that is initially at +50.0°C. Assume no heat is transferred to the cup or the surroundings. The specific heat of liquid water is 4186 J/(kg °C), of solid water is 2060 J/(kg °C), and of copper is 385 J/(kg °C). The latent...
A block of copper has a mass of 100 kg and an initial temperature of 900...
A block of copper has a mass of 100 kg and an initial temperature of 900 K. Copper can be modeled as an incompressible substance with a specific heat capacity of 0.4 kJ/kg-K. a.) The copper block is dropped into a large lake at 300 K and allowed to come to thermal equilibrium. How much entropy is generated (kJ/K)? b.) If a reversible heat engine were connected between the lake and the copper block and operated until the temperature of...
A sample of K(s) of mass 3.162 g undergoes combustion in a constant volume calorimeter at...
A sample of K(s) of mass 3.162 g undergoes combustion in a constant volume calorimeter at 298.15 K. The calorimeter constant is 1849 J⋅K−1, and the measured temperature rise in the inner water bath containing 1508 g of water is 1.776 K. CP,m(H2O,l)=75.3J⋅mol−1⋅K−1. Part A Calculate ΔU∘f for K2O. Part B Calculate ΔH∘f for K2O.
A 1.05 kg block of copper at 100°C is placed in an insulated calorimeter of negligible...
A 1.05 kg block of copper at 100°C is placed in an insulated calorimeter of negligible heat capacity containing 3.50 L of liquid water at 0.0°C. (a) Find the entropy change of the copper block. J/K (b) Find the entropy change of the water. J/K (c) Find the entropy change of the universe. J/K
A 4.2-kg block of ice originally at 263 K is placed in thermal contact with a...
A 4.2-kg block of ice originally at 263 K is placed in thermal contact with a 13.4-kg block of silver (cAg = 233 J/kg-K) which is initially at 1075 K. The H2O - silver system is insulated so no heat flows into or out of it. 1) At what temperature will the system achieve equilibrium? 2) What will be the phase of the H2O at equilibrium? Solid (ice) Liquid (water) Gas (vapor)
A copper block is removed from a 320 ∘C oven and dropped into 1.20 kg of...
A copper block is removed from a 320 ∘C oven and dropped into 1.20 kg of water at 22.0 ∘C. The water quickly reaches 27.5 ∘C∘and then remains at that temperature. What is the mass of the copper block? The specific heats of copper and water are 385 J/(kg⋅K) and 4190 J/(kg⋅K) respectively. Express your answer with the appropriate units.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT