What will be the final length of a copper rod when it is placed in a hot water bath with 95°C temperature? At room temperature (22°C), its length is 3.6 m. 1.70 x 10 Note: acopper %3D Answer: meter (must have 4 decimal places)
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- A cylinder of gas at room temperature (20°C) has a pressure p1. To what temperature in degrees Celsius would the temperature have to be increased for the pressure to be 1.2p1?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 gramsLuis and Salman are trying to increase the temperature of a substance by heating it. . What is the quantity of heat in kilojoules required to raise the temperature of 1.2 kg of the substance from3°C to 110 °C at a pressure of 1.0 atm? Please keep three significant figures. Useful information: Melting point = 293 K heat of fusion = 3.90 x 104 J/kg. boiling point is 423 K heat of vaporization 7.80 x 104 J/kg (at a pressure of 1.0 atm). The specific heats for the solid phase is 600 J/(kg K) The specific heats for the liquid phase is 1000 J/(kg K) The specific heats for the gaseous phase is 400 J/(kg K)
- Luis and Salman are trying to increase the temperature of a substance by heating it.. What is the quantity of heat in kilojoules required to raise the temperature of 3.2 kg of the substance from1° C to 115 °C at a pressure of 1.0 atm? Please keep three significant figures. Useful information: Melting point = 293 K heat of fusion =3.90 x 104 J/kg. boiling point is 423 K heat of vaporization 7.80 x 104 J/kg (at a pressure of 1.0 atm). The specific heats for the solid phase is 600 J/(kg K) The specific heats for the liquid phase is 1000 J/(kg K) The specific heats for the gaseous phase is 400 J/(kg K) 339.2 20 F3 4 900 F4 % 5 F5 A 6 tv Ni MacBook Air F6 7 F7 * F8 A 9The cubit is an ancient unit of measurement for length, where 1 cubit is approximately 444.25 mm. A cubic cubit (cubit3) is a measurement of volume. You have a steel container completely filled with gasoline. How many cubic cubits will spill out of the 22.8 cubits3container when the temperature is raised from 26.1 °C to 79.4 °C ?The cubit is an ancient unit of measurement for length, where 1 cubit is approximately 444.25 mm. A cubic cubit (cubit3) is a measurement of volume. You have a steel container completely filled with gasoline. How many cubic cubits will spill out of the 28.8 cubits3 containers when the temperature is raised from 21.5 °C to 48.7 °C?
- Suppose that at room temperature, a certain aluminum bar is 1.0000 m long. The bar gets longer when its temperature is raised. The length l of the bar obeys the following relation: 1.0000 + 2.4 x 10-³T, where T is the number of degrees Celsius above room temperature. What is the change of the bar's length if the temperature is raised to 18.3 °C above room temperature? Express your answer in meters to two significant figures. Πν ΑΣφ ? Al = mA gas is heated to 75 °C and a pressure of 200 kPa. If the container is compressed to hold a volume of 700 mL, what was the volume of the gas, (in litres), at a temperature of 40 °C and 100 kPa pressure? B. A vessel of volume 5x10-5 m3 contains hydrogen at a pressure of 1.5 Pa at a temperature of 37 °C. Estimate: i. The number of molecules of hydrogen gas in the vessel. (4 marks) ii. The number of moles of hydrogen. iii. Mass of hydrogen iv. The kinetic energy of hydrogen. v. The root mean square speed. Given: M = 1.008 g/mol; R = 8.31 J/mol-K; NA = 6.02 x 1023 mol-1; k = 1.38 x 10-23 J/KA glass device at 0 °C is filled with a liquid at the same temperature. The whole is heated to 40 °C and 0.12 N of the liquid is spilled. If the temperature is then raised to 100 °C, 0.16 N more liquid is spilled. Calculate the cubic expansion coefficient of the liquid (m°C-1). The cubic expansion coefficient of glass is 3x10-5 °C-1.
- A copper pipe in a house that carries hot water is installed at 22 °C at a length of 16 m. The final temperature of the pipe is 61°C when the hot water is flowing through it. What is the change in length of the pipe, to three decimal places expressed in m?A brass cube has an edge length of 33.2 cm at 20.0°C. Find (a) the increase in surface area and (b) the increase in volume when it is heated to 75.0°C.One rod is made from lead and another from quartz. The rods are heated and experience the same change in temperature. The change in length of each rod is the same. If the initial length of the lead rod is 0.14 m, what is the initial length of the quartz rod?