What is the specific internal energy of water at 50 kPa and 190°C? Use data from the steam tables. The specific internal energy of water is ikJ/kg.
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- m = 0.593 kg of methanol in atmospheric pressure is heated with an electric heater from T₁ = 30.2 °C to its boiling point. After the heating my methanol is vaporized. Heating and vaporizing takes t = 450.41 s with n=0.59 heater's efficiency. What is the volume of methanol? V = What is the energy required for heating? E₁ = 1 kJ m³ Your last answer was interpreted as follows: 1 What is the energy required for vaporizing? Ev = 1 kJ Your last answer was interpreted as follows: 1 What is the power of the heater? P = 1 с Your last answer was interpreted as follows: 1 Your last answer was interpreted as follows: 1 What is the electr. energy needed for heating and vaporizing? Eε = 1 kJ Your last answer was interpreted as follows: 1 h Do not leave any fields blank. If you don't know the answer, insert 1 for example. Insert the answer with 3 significant digits without rounding the answer. Constant P Tb Value Unit 2.53 1165 786.3 64.7 °C umges Quantity heat capacity kg K kJ kW kg kg LAN Symbol h…A sample of helium behaves as an ideal gas as it is heated at constant pressure from 273 K to 403 K. If 22.0 J of work is done by the gas during this process, what is the mass of helium present? mgA solid cylindrical bar conducts heat at a rate of 25 W from a hot to a cold reservoir under steady state conditions. If both the length and the diameter of this bar are doubled, the rate at which it will conduct heat between these reservoirs will be O 12.5 W. O 200 W. O 100 W. O 25 W. O 50 W.
- Liquid helium has a very low boiling point, 4.2 K, as well as a very low latent heat of vaporization, 2.00 104 J/kg. If energy is transferred to a container of liquid helium at the boiling point from an immersed electric heater at a rate of 19.0 W, how long does it take to boil away 2.30 kg of the liquid? _________________minAn ideal diatomic gas initially has a pressure of 5 2.00x10^5Pa, a volume of 4.00m^3 and a temperature of 27 C . It has an adiabatic change in pressure to 6.00x10^5 Pa. a. What are the new volume and temperature? b. What is the change in internal energy of the gas?A 2.6 kg lump of aluminum is heated to 96°C and then dropped into 11.0 kg of water at 5.4°C. Assuming that the lump-water system is thermally isolated, what is the system's equilibrium temperature? Assume the specific heats of water and aluminum are 4186 and 900 J/kg-K, respectively. Number i Units
- First Question: A. Using the definition of specific heat, the first law of thermodynamics and the ideal gas law, show that: (i) dQ = Cy dT +P dV, where Cy is the specific heat at constant volume, (ii) Cp = Cv + R, where Cp is the specific heat at constant pressure and R is the ideal gas constant. B. mol sample of hydrogen gas is heated at constant pressure from 300K to. 420K. Calculate (a) the energy transferred to the gas by heat, (b) the increase in its internal energy, and (c) the work done on the gas. %3D %3DIce at -12.1 °C and steam at 121 °C are brought together at atmospheric pressure in a perfectly insulated container. After thermal equilibrium is reached, the liquid phase at 44.1 °C is present. Ignoring the container and the equilibrium vapor pressure of the liquid at 44.1 °C, find the ratio of the mass of steam to the mass of ice. The specific heat capacity of steam is 2020 J/(kg C°). af Number i Initial state Units Steam - Ice Equilibrium WaterUnder constant-volume conditions, 2800 J of heat is added to 1.6 moles of an ideal gas. As a result, the temperature of the gas increases by 140 K. How much heat would be required to cause the same temperature change under constant-pressure conditions? Do not assume anything about whether the gas is monatomic, diatomic, etc.
- 64870 J of heat is added to a gas at a constant pressure of 1.75 x 105 Pa This causes a change in internal energy of 2570 J. If the starting volume is .864 m3, what is the final volume?A cylinder containing 5.00 mol of nitrogen gas is at room temperature (300 K). If the pressure of the gas is held constant and the gas is heated, how much energy must be transferred by heat to the gas to increase its temperature by 100 K? Select one: O a. 3.24 x 104 J O b. 1.46 x 104 J O c. 2.15 x 104J d. 0.94 x 104 J O e. 1.04 x 104 J OI have got variations in answers when I have asked this question. I have got answers anywhere from 75000 J, 6079.5 J to 74919 J and -6.221kJ. I need to know the correct answer for this I am hopelessly confused.