How much energy is required to change a 50-g ice cube from ice at −35°C to steam at 120°C? MJ
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How much energy is required to change a 50-g ice cube from ice at
to steam at 120°C?
MJ
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- 9.00 kg of ice at -4.30°C is added to a cooler holding 30 liters of water at 20.0°C. What is the temperature of the water when it comes to equilibrium?What mass of water at 28.0°C must be allowed to come to thermal equilibrium with a 1.70-kg cube of aluminum initially at 150°C to lower the temperature of the aluminum to 62.0°C? Assume any water turned to steam subsequently recondenses. kgPlease asap
- In Dexter’s lab, he pours 1.65kg of molten gold at 1063°C into a 1.30kg iron cauldron filled with 2.70kg of water both at 15.0°C. At the same moment he drops a 0.400kg piece of ice initially at -20.0°C into the cauldron and begins to stir. If we treat the cauldron and its contents as a calorimeter, what will be the final temperature for the system in degrees Celsius?A 40 g block of ice is cooled to -76°C and is then added to 610 g of water in an 80 g copper calorimeter at a temperature of 27°C. Determine the final temperature of the system consisting of the ice, water, and calorimeter. Remember that the ice must first warm to 0°C, melt, and then continue warming as water. The specific heat of ice is 0.500 cal/g ·°C = 2090 J/kg°C.What mass of water at 20.0°C must be allowed to come to thermal equilibrium with a 1.95-kg cube of aluminum initially at 150°C to lower the temperature of the aluminum to 60.0°C? Assume any water turned to steam subsequently recondenses. kg
- A person tries to cool down her bath water by adding 5.0 Kg of ice at 0°C to 75.0 Kg of water at 70°C. What is the final temperature of the water? (Lf = 333 KJ/Kg & cH2O =4186 J/Kg°C)Ice has formed on a shallow pond, and a steady state has been reached, with the air above the ice at -7.6°C and the bottom of the pond at 3.7°C. If the total depth of ice + water is 2.3 m, how thick is the ice? (Assume that the thermal conductivities of ice and water are 0.40 and 0.12 cal/m-Cº-s, respectively.) Number UnitsSteam at 100°C is condensed into a 62.0 g brass calorimeter cup containing 220 g of water at 21.0°C. Determine the amount of steam (in g) needed for the system to reach a final temperature of 48.0°C. The specific heat of brass is 380 J/(kg · °C).