A 22.0g block of aluminum is heated to 190 o C. It is then placed in...
A 160 g block of aluminum heated to 120 °C is dropped into a 350 g copper calorimeter container containing 420 g of water. If the initial temperature of the calorimeter and the water is 25.0°C, what is the final equilibrium temperature of the system?
A 25 gram sphere of aluminum is heated to 95.5°C and placed in a well-insulated container containing 100.0 mL water at 25.5°C. What is the temperature of the water after thermal equilibrium is reached?
A 65.00 gram piece of Aluminum is heated to 80.0 0c. It is then placed in 135.00 mL of 26.00 0 water. The final temperature of the water with the metal in it is 31.0 0 heat of the aluminum? C. What is the specific
5) A 125-g sample of an unknown mineral was heated to 102.5°C and placed into a calorimeter containing 85.0 g of water at 19.5°C. The heat capacity of the calorimeter was 13.9 J/°C. The final temperature in the calorimeter was 53.0"C. What is the specific heat of the mineral? Show work for partial credit. GADT 5) A 125-g sample of an unknown mineral was heated to 102.5°C and placed into a calorimeter containing 85.0 g of water at 19.5°C. The...
A 750 g block of copper is heated to 250 degrees C. It is placed in a 350 g aluminum vessel that contains 200 g of water at 5.00 degrees C. What is the final temperature of the copper, water, and aluminum vessel? Specific heat of copper = 0.093 cal/g C degrees Specific heat of aluminum = 0.215 cal/g C degrees Specific heat for water = 1.0 cal/g C degrees
4. A 47.4 g sample of a metal is heated to 95.2°C and then placed in a calorimeter containing 120.0 g of water at 21.5°C. The final temperature of the water is 24.5°C. Which metal was used? a. Aluminum (c = 0.89 J/gºC) OES:47.4.(24.5 - 95.2) + 4.184.120 (24.5-215) b. Iron (c = 0.45 J/g °C) o=s.47.4.(-70.7 + 1506.24 c. Copper (c=0.20 J/g°C) d. Lead (c = 0.14 J/g°C)
A large block of high purity aluminum is placed in contact with magnesium. The materials are heated to 500°C and held at that temperature for 24 hours. What is the concentration of magnesium at a depth of 500 µm into the aluminum at the end of this heat treatment? The density of magnesium is 1.74 gm/cm3, respectively. At 500°C the Arrhenius parameters for the diffusion of Mg into Al are: Do= l.2xl0-4 (m2/s) Q = 131 kJ/mol
An aluminium block is heated to 100 °C and then placed immediately in 100 g of water which is initially at a temperature of 25.0 °C in a coffee cup calorimeter. Once the system reaches thermal equilibrium, the temperature of the water that surrounds the block is 28.0 °C. Calculate the mass of the aluminium block. The specific heat capacity of Al is 0.900 J g^–1 K^–1 and for H2O is 4.184 J g^–1 K^–1
A 92.5 g piece of aluminum (which has a molar heat capacity of 24.03]/°C-mol) is heated to 624°C and dropped into a calorimeter containing water (specific heat capacity of water is 4.18 J/g°C) initially at 19.2°C. The final temperature of the water is 135.2°C. Ignoring significant figures, calculate the mass of water in the calorimeter.
An aluminum block of mass 500 g is heated to a temperature of 150 C and droped into a cup of water of mass 1500 g. The heat capacity of the cup is 100 cal/K. Assuming that the initial temperature of the cup and water is 20 C, find the final temperature of the system after it reaches thermal equilibrium.