A 295-g aluminum engine part at an initial temperature of3.00°C absorbs 85.0 kJ of heat. What is the final temperature ofthe part (specific heat of Al = 0.900 J/g·°C)?
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A 295-g aluminum engine part at an initial temperature of3.00°C absorbs 85.0 kJ of heat.
What is the final temperature ofthe part (specific heat of Al = 0.900 J/g·°C)?
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- A 195 g aluminum engine part at an initial temperature of 3.0˚C absorbs 40.0 kJ of heat (q). What is the final temperature of the part after absorbing this heat? (sAl = 0.9 J/g˚C)A heavy pot made of copper has a mass of 2.24 kg (including the lid) and is heated in an oven to a temperature of 154 °C. You pour 0.12 kg of water at 26.0 °C into the pot and quickly close the lid so that no steam can escape. We assume that no heat is lost to the surrounding. For copper, Ccopper 390 J/(kg.K) For water, Cwater 4190 J/(kg.K), L, = 2256 kJ/kg, L; = 333 kJ/kg. %3D What is the final mass of steam in the pot? onA 319−g aluminum engine part at an initial temperature of 11.47° C absorbs 61.0 kJ of heat. What is the final temperature of the part (c of Al = 0.900 J/·K)?
- Digestingfat produces 9.3 food calories per gram of fat, and typically 80%of this energy goes to heat when metabolized. (One food calorie is1000 calories and therefore equals 4186 J.) The body then movesall this heat to the surface by a combination of thermal conductivityand motion of the blood. The internal temperature of the body(where digestion occurs) is normally 37C, and the surface is usuallyabout 30C. By how much do the digestion and metabolism of a2.50 g pat of butter change your body’s entropy? Does it increase ordecrease?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.A 0.310 kg aluminum bowl holding 0.805 kg of soup at 25.0\deg C is placed in a freezer. What is the final temperature (in \deg C) if 389 kJ of energy is transferred from the bowl and soup, assuming the soup's thermal properties are the same as that of water?
- A hot (90.0°C) metal object has a mass of 286-g and a specific heat of 270 J/kg-°C. George drops the metal into a 70.0-g aluminum calorimeter containing 205-g of water at 20.0°C. When equilibrium is reached, what will be the final temperature of the system? caluminum = 900 J/kg-°C, Cwater =4186 J/kg.°C. А. 25.41°C D. 21.07°C В. 29.85°C Е. 29.45°C С. 21.92°C F. 30.49°CA laboratory technician drops a 0.0850 kg sample of unknownsolid material, at 100.0°C, into a calorimeter. The calorimeter can, initiallyat 19.0°C, is made of 0.150 kg of copper and contains 0.200 kgof water. The final temperature of the calorimeter can and contents is26.1°C. Compute the specific heat of the sample.A large power plant heats 1527 kg of water per second to high-temperature steam to run its electrical generators. (a) How much heat transfer is needed each second to raise the water temperature from 45.0°C to 100°C, boil it, and then raise the resulting steam from 100°C to 450°C? Specific heat of water is 4184 J/(kg · °C), the latent heat of vaporization of water is 2256 kJ/kg, and the specific heat of steam is 1520 J/(kg · °C). (b) How much power is needed in megawatts? (Note: In real power plants, this process occurs under high pressure, which alters the boiling point. The results of this problem are only approximate.)
- In order to determine the heat capacity of their latest phone, CrabappleTM engineers cool the phone in the freezer to -39.9ºC. They then drop it into a calorimeter with some water in it that is at a temperature of 59.2ºC. The calorimeter (including the water) has a total heat capacity of 773.59 J/ºC. After a few minutes the temperature of the calorimeter is stabilized to 30.2ºC. What is the heat capacity of the phone? Enter your answer with at least 3 sig figs assuming units of J/ºC.A 0.1375-g sample of magnesium is burned in a constant-volume bomb calorimeter that has a heat capacity of 1769 J °C1. The calorimeter contains exactly 300 g of water, and the temperature increases by 1.126°C. Calculate the heat given off by the burning magnesium, in kJ g-l and in kJ mol-!. The specific heat of water is 4.184 J g1 °C -1.A 300g piece of iron at 200 deg Celcius is placed in a 100g aluminum cup containing 220g of liquid at 20 deg Celcius. The final temperature is said to be 49 deg Celsius. What is the specific heat of liquid? Specific heat of Iron is 0.44 J/g K. Specific heat of Aluminum is 913 J/kg° C.
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