A lab instructor performs an experiment using an aluminum container, with a mass of 0.150 kg, that contains 0.285 kg of water, all initially at 28.0°C. The lab instructor then adds a sample of an unknown substance to the water. The sample has a mass of 1.3 kg and an initial temperature of 91.0°C. After waiting until the entire system reaches thermal equilibrium, the lab instructor measures a final temperature of 32.0°C. What is the specific heat (in J/(kg · °C)) of the unknown substance? You may assume the thermal energy transferred to the environment during the experiment is negligible. ? J/(kg · °C)

A lab instructor performs an experiment using an aluminum cup that contains 225 g of water and a 130 g copper stirrer, all initially at 27.0°C. (Note that the student wears insulated gloves when handling the stirrer.) The lab instructor then adds a sample of silver to the water. The sample has a mass of 446 g and is initially at a temperature of 85.0*C. After stirring the mixture until it reaches thermal equilibrium, the lab instructor measures a final temperature of 32.0°C. What is the mass (in g) of the aluminum cup? Need Help? Read

Two 39.5-g ice cubes initially at 0°C are added to 460 g of water at 22.0°C. Assuming this system is insulated and ignoring heat transfer with the glass, what is the equilibrium temperature of the mixture? °C

A copper rod and an aluminum rod of equal diameter are joined end to end in good thermal contact. The temperature of the free end of the copper rod is held constant at 100°C, and that of the far end of the aluminum rod is held at 0°C. If the copper rod is 0.50 m long, what must be the length of the aluminum rod so that the temperature at the junction is 50°C?

A copper rod and an aluminum rod of equal diameter are joined end to end in good thermal contact. The temperature of the free end of the copper rod is held constant at 100°C, and that of the far end of the aluminum rod is held at 0°C. If the copper rod is 0.42 m long, what must be the length of the aluminum rod so that the temperature at the junction is 50°C?

A 32 kg piece of lead is immersed in a container with 5.8 kg of water at 15 ° C. If the temperature when both bodies reach equilibrium is 39.7 ° C, determine the initial temperature of the piece of lead.

The boiling point of a liquid is 28.3°C. A portion of the liquid is at equilibrium with its vapor at 22.3°C in a sealed flask. The temperature rises to to 32.6°C.What happens inside the container? Liquid is converted to vapor, the new equilbrium mixture contains less liquid and more vapor. The vapor is all converted to liquid. Vapor is converted to liquid, the new equilibrium mixture contains more liquid and less vapor. The liquid is all converted to vapor.

A cube of ice is taken from the freezer at -8.8°C and placed in a 104 g iron cup filled with 279 g of water. Both the water & the cup are at 23.9°C. Eventually the system reaches thermal equilibrium at 12.4°C. Determine Qcup, Qwater (for the water initially in the cup), Qice, & the mass of the ice.Qcup = Qwater = Qice = mice =

A combination of 0.38 kg of water at 22.64°C, 0.54 kg of aluminum at 29.16°C, and 0.14 kg of lead at 100°C is mixed in an insulated container and allowed to come to thermal equilibrium. Ignore any energy transfer to or from the container. Calculate the final temperature in °C of the mixture. CWater) = 4186 J/kg.K (Aluminium) = 900 J/kg.K %3D Clead) = 128 J/kg.K Note: Answer will be up to two decimal places

A 24.0 g copper ring at 0°C has an inner diameter of D = 2.90760 cm. A hollow aluminum sphere at 81.0°C has a diameter of d = 2.91274 cm. The sphere is placed on top of the ring (see the figure), and the two are allowed to come to thermal equilibrium, with no heat lost to the surroundings. The sphere just passes through the ring at the equilibrium temperature. What is the mass of the sphere? The linear expansion coefficient of aluminum is 23.0 x 106 /C°, the linear expansion coefficient of copper is 17.0 x 10-6 /C, the specific heat of aluminum is 900 J/kg-K, and the specific heat of copper is 386 J/kg-K. Al Gu Number i Units