You have 750 g of water at 10.0°C in a large insulated beaker.How much boiling water at 100.0°C must you add to this beaker so thatthe final temperature of the mixture will be 75°C?
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You have 750 g of water at 10.0°C in a large insulated beaker.
How much boiling water at 100.0°C must you add to this beaker so that
the final temperature of the mixture will be 75°C?
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- On a hot day, the temperature of an 82000-L swimming pool increases by 1.45°C. What is the net neat transfer, in joules, into the pool during this heating? Ignore any complications, such as loss of water by evaporation.How long does it take to raise the temperature of a 0.750-kg aluminum pot containing 2.50 kg of water from 30.0°C to the boiling point and then boil away 0.750 kg of water if the rate of heat transfer is 500 W, 1 watt = 1 joule/second? Select the correct answer 7.91 × 103 Your SAnswer О 1.01 х 104s O 2.31 × 104s О 5.20 х 103 s О 4.94 х 103 SA stainless steel saucepan, with a base that is made of 0.540-cm-thick steel (κ = 46.0 W/(m·K)) fused to a 0.150 cm thickness of copper (κ = 401 W/(m·K)), sits on a ceramic heating element at 128°C. The diameter of the pan is 18.0 cm, and it contains boiling water at 100.00° C If the copper-clad bottom is touching the heat source, at what rate will the water evaporate from the pan? Latent heat of vaporization (Lv) for water is 2256 J/g. Enter your answer in three decimal points.
- A person pours 0.300 kg of hot water—initially in a pot at 70.0°C—into a 0.120 kg steel cup initially at 20.0°C. What is the equilibrium temperature?A cube of ice is taken from the freezer at -8.5°C and placed in a 100 gram aluminum calorimeter filled with 300 grams of water at a room temperature of 20°C. The final situation is observed to be all water at 17°C. What was the mass of the ice cube? Given the following values: Cice =2100 J/kg/°C, Cwater = 4186 J/kg/°C, Caluminum 920 J/kg/°C, and for water Le 3.33×105 J/kg and Lv = 22.6×105 J/kg. 1A copper vat is 10 m long at room temperature (20 degrees Celsius). How much longer is it when it contains boiling water at 1 atm pressure?
- Thank you!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?ermal Conductivities DETAILS SERPSE10 19.3.OP.011. A 1.00-kg block of copper at 19.0°C is dropped into a large vessel of liquid nitrogen at 77.3 K. How many kilograms of nitrogen boil away by the time the copper reaches 77.3 nitrogen is 48.0 cal/g.) kg Submit Answer (The specific heat of copper ASK YOUR TEACH 0.092 0 cal/g °C, and the latent heat of vaporization of
- Liquid nitrogen is often used as an effective coolant, as its boiling temperature is 77.0 K. A 0.750 kg block of iron with an initial temperature of 313.27 K is immersed in an insulated bath of liquid nitrogen with an initial temperature of 77.0 K. After the iron and the liquid nitrogen reach a state of thermal equilibrium, the iron block has cooled to a final a temperature of 77.0 K, and 198 g of liquid nitrogen has boiled off (vaporized). Assuming that the specific heat of iron over this temperature range is is 285 J/kg·K, What is the latent heat of vaporization of liquid nitrogen?(a) How much heat transfer (in kcal) is required to raise the temperature of a 0.650 kg aluminum pot containing 3.00 kg of water from 10.0°C to the boiling point and then boil away 0.600 kg of water? X kcal Enter a number. (b) How long (in s) does this take if the rate of heat transfer is 600 W (1 watt = 1 joule/second (1 W = 1 J/s))?Indigenous people sometimes cook in watertight baskets by placing hot rocks into water to bring it to a boil. What mass of 500.0C rock must be placed in 4.00 kg of 15.0C water to bring its temperature to 100.0C, if 0.0250 kg of water escapes as vapor from the initial sizzle? You may neglect the effects of the surroundings and take the average specific heat of the rocks to be that of granite.