A coffee cup calorimeter contains water at an initial temperature of 20.0 °C and the whole apparatus is calculated to have a calorimeter constant (heat capacity) of 75.0 J/ °C. A 28 g piece of an unknown metal is removed from a pot of boiling water with a temperature of 100.0 °C and placed into the calorimeter. The contents of the calorimeter come to an average temperature of 27.0 °C. What is the specific heat capacity of the metal? A) 0.26 J/g･ °C B) 3.89 J/g･ °C C) 4.18 J/g･ °C D) 7.19 J/g･ °C E) 75.0 J/g･ °C

In an electrically heated home, the temperature of the ground in contact with a concrete basement wall is 14.0 °C. The temperature at the inside surface of the wall is 21.4 °C. The wall is 0.12 m thick and has an area of 7.7 m2. Assume that one kilowatt hour of electrical energy costs $0.10. How many hours are required for one dollar's worth of energy to be conducted through the wall? Number Units the tolerance is +/-2%

A 30.0-g ice cube at its melting point is dropped into an aluminum calorimeter of mass 100.0 g in equilibrium at 24.0 °C with 300.0 g of an unknown liquid. The final temperature is 4.0 °C . What is the heat capacity of the liquid?

In an insulated container, you combine hot metal with ice. The ice starts at -20 degree C. The copper starts at 900 degree C. When 15 kg of the copper is combined with an unknown amount of ice, the system reaches equilibrium as soon as all of the ice has boiled to become steam. What is the final temperature of the copper?

You drop an ice cube into an insulated bottle full of water and wait for the ice cube to completely melt. The ice cube initially has a mass of 70.0 g and a temperature of 0°C. The water (before the ice cube is added) has a mass of 880 g and an initial temperature of 20.0°C. What is the final temperature (in °C) of the mixture? (Assume no energy is lost to the walls of the bottle, or to the environment.)  ?°C

A bolt hole in a brass plate has a diameter of1.21 cm at 19.62°C.  What is the diameter of the hole when the plate is heated to193.44°C?  (The coefficient of linear thermal expansion for brass is 19 × 10-6 /C°.) a. 0.0052581 b. 1.2140 c. 1.2103 d. 0.0069607

You drop an ice cube into an insulated container full of water and wait for the ice cube to completely melt. The ice cube initially has a mass of 60.0 g and a temperature of 0°C. The water (before the ice cube is added) has a mass of 850 g and an initial temperature of 30.0°C. What is the final temperature (in °C) of the mixture? (Assume no energy is lost to the walls of the container, or to the environment.)

In an electrically heated home, the temperature of the ground in contact with a concrete basement wall is 11.9 °C. The temperature at the inside surface of the wall is 19.0 °C. The wall is 0.13 m thick and has an area of 7.5 m². Assume that one kilowatt hour of electrical energy costs $0.10. How many hours are required for one dollar's worth of energy to be conducted through the wall? Number i Units

@ 2 O: F2 W S 8. An electric immersion heater has a power rating of 1900 W. If the heater is placed in a 1.8 kg of water at 30 °C, how many minutes will it take to bring the water to a boiling temperature? (Assume that there is no heat loss except to the water itself. Cwater=4186 J/kg.°C) min # 3 X 80 F3 E D $ 4 C F4 R TI F or do % 5 V F5 T G > 6 MacBook Air B F6 < H 887 & ◄◄ F7 U N * 8 J DII F8 M ( 9 K F9 O ) C L F10 (4) P F11 31 + 11 F12 18 BEL ?

A 25-kg iron cannonball is fired with speed 220 m/s. If it hits a concrete wall and half of its initial kinetic energy (KE =mv²) is converted to internal energy in the cannonball (or heats the cannonball), then how much does the temperature of the cannonball increase? The specific heat of iron is 450 J/kg.°C. А. 32.16°C D. 22.82°C В. 28.90°C Е. 24.18°C C. 21.72°C F. 26.89°C