(TCO 7) Heat is added to a 5.0 kg piece of ice at a rate of 454.0 kW. How long will it take for the ice at 0.0 °C to melt? (For water, Lf = 334 kJ/kg and Lv = 2257 kJ/kg.)
Assuming the ice is at a temperature of 0º
then the energy needed is
E = 334kJ/kg x 5 kg = 1670 kJ
454 kW = 454 kJ/s
1336 kJ / 454 kJ/s = 3.67 seconds
.
Heat is added to a 1 kg piece of ice at a rate of 730 kW. How long will it take for the ice to melt if it was initially at 0.00°C? (The latent heat of fusion for water is 334 kJ/kg and its latent heat of vaporization is 2260 kJ/kg.) Answer in two decimal places.
please show the steps for A and B and C A Heat is added to a pure substance in a closed container at a constant rate. The figure shows a graph of the temperature of the substance as a function of time. If Lf - latent heat of fusion and Ly - latent heat of vaporization, what is the value of the ratio Ly/L for this substance? Temp. A) 5.0 B) 4.5 Time C) 1.5 D) 3.5 E) 7.2 B...
A 3873 kg sample of water at 0 C is cooled to-13 C and freezes in the process. How much heat is liberated? (for water Lf= 334 kj/kg and Lv= 2257 Kj/kg. The specific heat for ice is 2050 J/kg*K)
A 640 kg sample of water at 0°C is cooled to -6°C, and freezes in the process. How much heat is liberated? (For water Lf = 334 kJ/kg and Lv 2257 kJ/kg. The specific heat for ice is 2050 J/kg∙K.) Group of answer choices A)14,100 kJ B)176,000 kJ C)222,000 kJ D)320,000 kJ
What is the heat capacity of a 20.2-kg block of ice? The specific heat capacity of ice is 2.10 kJ/kg K. kJ/K It takes 880 J to raise the temperature of 350 g of lead from 0°C to 20.0°C. What is the specific heat of lead? kJ/(kg K) A heating coil inside an electric kettle delivers 3.20 kW of electric power to the water in the kettle. How long will it take to raise the temperature of 0.390 kg of...
2. How much heat transfer is necessary to raise the temperature of a 0.500 kg piece of ice from -30.0C to 110.0 C? cice-2090 J/kg C, Cater 4186 J/kg C,Cseam 1520 J/kg C, L-334 kJ/kg and Lv-2256 kJ/kg. 2. How much heat transfer is necessary to raise the temperature of a 0.500 kg piece of ice from -30.0C to 110.0 C? cice-2090 J/kg C, Cater 4186 J/kg C,Cseam 1520 J/kg C, L-334 kJ/kg and Lv-2256 kJ/kg.
A block of ice with a mass of 1.25kg is initially at -40 degrees C. It is placed into a thermally isolated container with 0.500kg of water at 75 degrees C. How much of the ice melts? Cice= 2.10 kJ/kgK Cwater= 4.186 kJ/kgK Csteam= 2.00 kJ/kgK Lf= 334 kJ/kg Lv= 2265 kJ/kg
How much heat is required to convert solid ice with a mass of 850 g and at a temperature of -26.5 °C to liquid water at a temperature of 64.5 °C? (The specific heat of ice is cice = 2100 J/kgK, the specific heat of water is cwater = 4186.8 J/kgK, and the heat of fusion for water is: Lf = 334 kJ/kg.)
How much heat is required to convert solid ice with a mass of 585 g and at a temperature of -29.0 °C to liquid water at a temperature of 74.5 °C? (The specific heat of ice is cice = 2100 J/kgK, the specific heat of water is cwater = 4186.8 J/kgK, and the heat of fusion for water is: Lf = 334 kJ/kg.)
How much heat is required to convert solid ice with a mass of 525 g and at a temperature of-23.5 °C to liquid water at a temperature of 48.5 °C? (The specific heat of ice is cice = 2100 /kgK, the specific heat of water is cwater-4186.8 J/kgK, and the heat of fusion for water is: Lf 334 kJ/kg.) Submit Answer Tries 0/12