A cup contains 154g of liquid h20 at 99 C. Calculate the heat released in kilojoules...
A well-insulated aluminum calorimeter cup with mass of 205 g contains 255 g of liquid water at 21.7 °C. A 287-g silver figure of polar bear, with initial temperature of 96.5 °C, is dropped into the water. What is the final temperature of the water, cup, and bear when they reach thermal equilibrium? The specific heats of silver, aluminum, and liquid water are, respectively, 234 J/(kg.K), 910 J/(kg:K), and 4190 J/(kg.K). Number 26.2 тос Incorrect. You might have neglected to...
Assuming that the specific heat of the solution is 4.18 J/(g⋅∘C) and that the calorimeter itself absorbs a negligible amount of heat, calculate ΔH in kilojoules for the reaction. Part A Assuming that the specific heat of the solution is 4.18 J/(g . C) and that the calorimeter itself absorbs a negligible amount of heat, calculate AH in kilojoules for the reaction K2O(8)+H20()-2KOH(aq) ανα ΑΣφ ? ΔΗ - kJ Request Answer Submit Provide Feedback Next> Constants Periodic Tab When 1.045...
The specific heat c is the amount of heat necessary to change the temperature of 1.00 kg of mass by 1.00°C. The specific heat c is a property of the substance; its Sl unit is J/(kg · K) or J/(kg.°C). Recall that the temperature change (AT) is the same in units of kelvin and degrees Celsius. water silver copper cup Case 1: A 0.780-kg silver pellet with a temperature of 85 °C is added to 0.150 kg of water in...
1.a In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a metal. She heats 18.7 grams of chromium to 98.51°C and then drops it into a cup containing 84.8 grams of water at 24.15°C. She measures the final temperature to be 25.94°C. Assuming that all of the heat is transferred to the water, she calculates the specific heat of chromium to be J/g°C. 1.b An electric range burner weighing 660.0 grams is turned...
You drop a 281-g silver figure of a polar bear into the 231-g aluminum cup of a well-insulated calorimeter containing 255 g of liquid water at 24.9°C. The bear\'s initial temperature is 98.1°C. What is the final temperature of the water, cup, and bear when they reach thermal equilibrium? The specific heats of silver, aluminum, and liquid water are, respectively, 234 J/(kg·K), 910 J/(kg·K), and 4190 J/(kg·K).
You drop a 285-g silver figure of a polar bear into the 223-g aluminum cup of a well-insulated calorimeter containing 273 g of liquid water at 23.9°C. The bear\'s initial temperature is 95.1°C. What is the final temperature of the water, cup, and bear when they reach thermal equilibrium? The specific heats of silver, aluminum, and liquid water are, respectively, 234 J/(kg·K), 910 J/(kg·K), and 4190 J/(kg·K).
21.A piece of copper metal is initially at 100 C. It is dropped into a coffee cup calorimeter containing 50.0g of water at a temperature of 20.0°C. After thermal equilibrium established, the final temperature of both copper and water is 25.0 °C. Assume there is no heat loss what is the heat capacity, C, of the copper? The specific heat of water is 4.18 J/g°C tutor a. 2.79 J/oC b. 3.33 JoC c. 2.79 J/oC d. 13.9 JoC 3
Calculate the amount of heat (in kilojoules) required to vaporize 2.58 kg of water at its boiling point. Express the heat in kilojoules to three sianificant fiaures. Suppose that 0.48 g of water at 25°C condenses on the surface of a 55-g block of aluminum that is initially at 25 °C. If the heat released during condensation goes only toward heating the metal, what is the final temperature (in degrees Celsius) of the metal block? (The specific heat capacity aluminum,...
37) A student attempts to determine the specific heat of a metal by conducting a calorimetry experiment. The student heats 250 g of the unknown metal to a temperature of 38 C. They then place the metal into a calorimeter which contains 100 g of water at 21°C. The maximum temperature of the water rises to 27°C. a) What is the heat gained by the water in the calorimeter? Specific heat of water is 4.18 J/g'C. (5 points) b) What...
How much energy (in kilojoules) is released when 12.6 g of steam at 110.5 ∘C is condensed to give liquid water at 67.0 ∘C? The heat of vaporization of liquid water is 40.67 kJ/mol, and the molar heat capacity is 75.3 J/(K⋅mol) for the liquid and 33.6 J/(K⋅mol) for the vapor.