A pure metal sample of 0.5 kg is heated from 40°C to 500°C, and the amount of heat energy required was around 88.78 kJ. Identify the metal.
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A: The solution can be given as follows :-
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Q: In a calorimetry experiment, a hot piece of metal 1s placed into a calorimeter containing cold…
A: For metal m=.095 kgTi=320 KTf=295 KcmetalFor water mw=.305 kgTi=290 KTf=295 Kcw=4184 jkgK
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Q: A 223.0 g piece of lead is heated to 90.0oC and then dropped into a calorimeter containing 697.0 g…
A: Mass of the lead is 223g Mass of the water is 697g Temperature of the lead is 90°C Temperature of…
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- One end of a copper rod is kept at 10°C while the other end is kept at 10'C, Find the rate of conduction through the rod if the diameter of the rod is 4.8cm and the length of the rod is 1.5m. O 20 cal/s O 100 cal/s O 10 calis O 2 cal/sA bar of lead (bar A) is in thermal contact with a bar of copper (bar B) of the same length and area (see the figure below). One end of the compound bar is maintained at Th = 84.0°C, and the opposite end is at 30.0°C. Find the temperature at the junction when the energy flow reaches a steady state.______________ °CA piece of metal was at a temperature of 27oC when it was found to be emitting thermal radiation at a rate of 0.20 W (J/s). Then it was placed in a furnace and brought to a temperature of 927oC. What would be the rate of thermal radiation emitted by this object at this higher temperature? Assume no change in surface area or emissivity.
- Lake Erie contains roughly 4.00 ✕ 1011 m3 of water. How much energy is required to raise the temperature of that volume of water from 18.0°C to 21.0°C? How many years would it take to supply this amount of energy by using the 1,400-MW exhaust energy of an electric power plant?A 79.19 gram brass is kept initially at a high temperature TB then is dropped into 114.72 gram of water at 23.8 °C . When equilibrium is reached the temperature of brass - water mixture is 25.3 °C. If the specific heat of brass is 375 J / kg ° C , calculate the initial temperature of brass TB ( Given , Specific heat of water is 4186 J / kg ° C ) Initial temperature of the Brass in ( ° C ) =Consider the following selected properties of water: Consider the following selected properties of water: Density (liquid water): d = 1.00 g/mL Heat of fusion: AHfus = 6.01 kJ/mol Heat of vaporization: AHvap = 40.67 kJ/mol Specific heat (liquid water): Cp = 4.184 J/(g-K) = 4.184 J/(g-°C) How much heat is needed to completely evaporate 36 mL of water at its normal boiling temperature? 47 J 81 J 47 kJ 110 kJ 81 kJ
- Suppose 6.6 kg of chloroform at 24.4°C is poured into 6.6 kg of propylene glycol at 37°C. Calculate the final equilibrium temperature, neglecting any energy processes associated with mixing, given Cprop = 2500 J/(kg-K) and Cchloroform = 1050 J/(kg-K). T = °CWhat quantity of heat (in J) would be required to convert 2.65 mol of a pure substance from a liquid at 40.0 °C to a gas at 113.0 °C? A Cliquid = 1.45 J/mol °C Tboiling = 88.5 °C Cgas = 0.65 J/mol °C AHvaporization = 1.23 kJ/molA volumetric flask made of Pyrex is calibrated at 20.0°C. It is filled to the 235-mL mark with 37.0°C glycerin. After the flask is filled, the glycerin cools and the flask warms so that the combination of glycerin and flask reaches a uniform temperature of 32.0°C. The combination is then cooled back to 20.0°C. (The average volume expansion coefficient of glycerin is 4.85 10-4(°C)−1.) (a) What is the volume of the glycerin when it cools to 20.0°C?