A 15-kg chunk of ice at -35°C is mixed with 2.25 kg of water at 55°C. Find how much water freezes after the mixture comes to equilibrium, assuming no heat gain or loss with the environment. Express your answer in kg. (How would I solvew for this solution? What equation can I use?)
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A 15-kg chunk of ice at -35°C is mixed with 2.25 kg of water at 55°C. Find how much water freezes after the mixture comes to equilibrium, assuming no heat gain or loss with the environment. Express your answer in kg. (How would I solvew for this solution? What equation can I use?)
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- A 10-kg chunk of ice at -30°C is mixed with 2.13 kg of water at 50°C. Find how much water freezes after the mixture comes to equilibrium, assuming no heat gain or loss with the environment. Express your answer in kg. (What can I use to solve this equation?)Hi please help: A 255 g lead ball at a temperature of 81.8 degrees Celsius is placed in a light calorimeter containing 156 g of water at 22.3 degrees Celsius. Find the equilibrium temperature of the system. Express answer using three significant figures.An unknown hot metal at 148.7°C with a mass of 49.6g was mixed with 28.61g of water at an initial temperature of 19.74°C. A final temperature (for both water and metal) of 27.71°C was reached. In units of J/(g°C), what is the specific heat of the unknown metal? Note: In the space below, please enter you numerical answer. Do not enter any units. If you enter units, your answer will be marked as incorrect.
- A graph of temperature versus time for a substance that has a mass of 2.00 kg is shown below. The sample is at a temperature of-10.0 degrees celsius and initially in the solid phase. Heat is added to the sample at a constant rate of 20.0 kj/minute. B& Care at a temperature of 119 degree Celsius. Answer the following questions: 1. What is the melting point of this substance? 2. What islare the phase/phases that exists/exist during the process from A to B and during the process from B to C? 3. Use the graph to calculate the specific heat for this substance in solid phase. 4.Use the graph to calculate the latent heat of fusion for this substance. Temperdture cc) B 120 + 100 80 60 40+ 20 + 12 4 6. 10 %3D 13 -20 Time (min) %3D F00⦁ When a certain quantity of helium gas contained inside and engine cylinder combusts, the expanding gas causes the 12-cm-radius piston to move outward by 10.0 cm. If the gas remains at a pressure of 120 kPa for this process, what is the heat transfer? (See the diagram at the top of the next page.)⦁ 1,960 J⦁ 1,660 J⦁ 1,360 J⦁ 1,060 J⦁ 760 Jphy
- Needs Complete typed solution with 100 % accuracy.Solve the following: a) A house walls that are 15 cm thick and have an average thermal conductivity four times that of glass wol. Assume there are no windows or doors. The walls' surface area is 950000 cm? and their inside surface is at 23 °C, while their outside surface is at 4°C. (Thermal conductivity of glass wool is 0.042 W/m°C) O Calculate the rate of heat conduction through house walls? (ii) How many 150W room heaters would be needed to balance the heat transfer due to conduction? (approximate number) b) A spherical infrared heater of radius 5.15 cm has an emissivity of 0.75. What temperature must it run at if the required power is 0.38 kW? Neglect the temperature of the environment. (Stefan's constant = 5.67*10-8 Wm 2K4) The temperature of the heater in Celsius =units in the heat absorption from the outside air. (b) 36,000 Btu/h Answers: (a) 9.43 hp, cdmppun