Calculate the energy required as heat to melt
Liquid mixtures of sodium and potassium are used in some nuclear reactors as coolants that can survive the intense radiation inside reactor cores. Calculate the energy required as heat to melt 250kg of sodium metal at 371K.
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0.266 mol of a solid was dissolved in 300 mL of water at 21.9 oC in a styrofoam cup calorimeter. After the solid had fully dissolved, the final temperature of the solution was 28.8 oC. What is the molar heat of solution of the substance?
How do the temperature of combustion and the temperatures of collant and exhaust affect the efficiency of automobile engines?
Naturally occurring zirconium exists as five stable isotopes: 90Zr with a mass of 89.905 amu (51.45%); 91Zr with a mass of 90.906 amu (11.22%);
Determined the amount of heat transferred to the air, in kJ, while increasing the temperature to 1200 K. Assume air has the constant specific heats evaluated at 300 K.
Liquid mixtures of sodium and potassium are used in some nuclear reactors as coolants that can survive the intense radiation inside reactor cores.
During the process there is a heat transfer of 60 kJ from the ideal gas to the surroundings. Determine the volume and pressure at the end of the process.
An air-water vapor mixture at 0.1 Mpa, 30°C, 80% RH has a volume of 50 m3. Calculate the specific humidity, dew point, wet bulb temperature, mass of dry air and mass of water vapor.
In a Little League baseball game, the 145 {\rm g} ball enters the strike zone with a speed of 15.0 {\rm m/s}. The batter hits the ball, and it leaves his bat with a speed of 20.0 {\rm m/s} in exactly the opposite direction.
Estimate the moisture picked up by 1 kg of dry air, and the total enthalpy change between the entering and leaving streams expressed per unit mass of dry air. Ans. 0.0864 kJ/kg air, 220 kJ/kg air.
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