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What is the heat capacity of a 28.5-kg block of ice? The specific heat capacity of ice is 2.10 kJ/kg·K.
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- A rectangular block of aluminum has the following dimensions: 1m x 1m x m. The density of aluminum is 2700kg/m^3. The specific heat of aluminum is 0.9 J/g K. How much does the block of aluminum weigh in Newtons?A copper cylinder with a mass of 125 grams and a temperature of 345 ° C cools when placed in a glass container containing 565 g of water initially at 20.0 ° C. The mass of the container is 50.0 g and the specific heat of the glass is 840 J / kg ∙ K. What is the temperature of the system when it reaches thermal equilibrium? assuming that the cooling occurs very quickly, so that no energy is lost in the air. The specific heat of copper is 385 J / kg ∙ K and that of water is 4190 J / kg ∙ K.Exactly 46.33 kJ of heat is transferred to a 1.389 kg slab of nickel at a temperature of 12.7°C. (a) If the specific heat of nickel is 0.445 J/g·K, what will be its final temperature? (b)Specify the molar heat capacity of this metal.
- 3.60 g of boiling water at 100.0°C was splashed onto a burn victim’s skin and cooled to 42.9°C on the 37.0°C skin. How much heat is given up by the water? Specific heat capacity of water is 4.186 J/(g·K).The glass of a window has an area of 1.0 m² and is 0.5 cm thick. If the indoor temperature is 20ºC and the outdoor temperature is 5°C, what is the rate of heat flow through this window? [k(glass) = 0.84 J/s.m.°C] 2500 J/s 630 J/s O 1300 J/s O 50,000 J/sA glass window in a house has an area of 0.67 m^2 and a thickness of 2.4 mm. The temperature inside the house is 21 C, and the outside temperature is 0 C. How much heat is lost through the window in 1 hour (3600 s) due to conduction? Use 1.0 W/(m x C) for the thermal conductivity of the glass. How much heat is lsot through the window in 1 hour (3600 s) due to raditaion? ( assume the temperature of the rntire glass is 21 C for this probelem). Which mode of heat transfer (condutciton vs. raditiaon) accounts for the greater amount of heat loss?
- A solid concrete wall has dimensions 4.0 m × 2.4 m and is 30 cm thick. The thermal conductivity of the concrete is 1.3 W/m ∙ K, and it separates a basement from the ground outside. The inner surface of the wall is at 18°C, and the outside surface is at 6°C. How much heat flows through the wall every hour?How much energy is required to change a 31 g ice cube from ice at -11 °C to steam at 112°C? The specific heat of ice is 2090 J/kg °C, the specific heat of water is 4186 J/kg °C and the specific heat of steam is 2010 J/kg °C. The heat of fusion of water is 333000 J/kg and the heat of vaporization is 2.26 × 106 J/kg. Answer in units of J.A closed box is filled with dry ice at a temperature of -86.0 °C, while the outside temperature is 21.0 °C. The box is cubical, measuring 0.394 m on a side, and the thickness of the walls is 4.49 × 102 m. In one day, 3.76 × 106 J of heat is conducted through the six walls. Find the thermal conductivity of the material from which the box is made. Number Units
- A 900 g copper rod at 20 degrees celcius has a length of 1.0000 m. The thermal expansion coefficient of copper is 17 x 10^-6 degrees celcius -1. The specific heat capacity is 0.385 kJ/kg degrees celcius. Question A: The copper is heated to 400 degrees celcius. What is the new length? Give the answer in meters and with 4 digits of precision after the decimal. Question B: The hot copper is then quenched by dunking the entire rod in a bucket with 10 kg of water at 20 degrees celcius. The specific heat capaciy of water is 4.18 kJ/kg degrees celcius. If none of the water turns to steam what is the equilibrium temp of the copper rod and water? Please give the answer in degrees celcius Question C: You measure the equilbrium temp and find that it is 24 degrees celcius. If the latent heat of vaporization of water is 2,260 kJ/kg, what mass of water turned to steam? Answer in gramsA blacksmith cools a chunk of iron initially at 625 °C by trickling water from a jug over it. The water in the jug has a temperature of 20.0°C. All of the water boils away and the iron chunk cools down 120 °C. If, in total, he poured 0.80 kg of water over the iron, what is the mass of this chunk of iron? The specific heat capacity for water is 4190 J/(kg.°C). Water has a melting point of 0°C and a boiling point is 100°C. The latent heat of fusion for water is 3.34 x105 J/kg and its latent heat of vaporization is 2.26 x106 J/kg. The specific heat capacity for iron is 470 J/(kg.°C). Iron has a melting point of 1538°C. The latent heat of fusion for iron is 2.47 x105 J/kgWhat will be the final temperature if 4.0 x 104 J of heat is transferred to a 1.5kg block of aluminum initially at 15 °C? The specific heat capacity of aluminum is 9.0 x 102 J/ kg °C.
