Question
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An insulated beaker with negligible mass contains liquid water with a mass of 0.295kg and a temperature of 75.7degreeC . How much ice at a temperature of -12.4degreeC must be dropped into the water so that the final temperature of the system will be 21.0degreeC ? Take the specific heat of liquid water to be 4190J/kg K . the specific heat of ice to be 2100,1/kg .K , and the heat of fusion for water to be 3.34x105J/kg. Two cylinders each contain 0.30mol of a diatomic gas at 270K and a pressure of 3.0 atm. Cylinder A expands isothermally and cylinder B expands adiabatically until the pressure of each is 1.0 atm. What is the final temperature of the gas in the cylinder A? Express your answer to two significant figures and include the appropriate units. This content requires Adobe Flash Player 10.0.0.0 or newer. What are the final temperature of the gas in the cylinder B ? Express your answer to two significant figures and include the appropriate units. The content requires Adobe Flash Player 10.0.0.0. or newer. What is the final volume of the gas in the cylinder A? Express your answer to two significant figures and include the appropriate units. This content requires Adobe Flash Player 10.0.0.0. or newer. 26.0g of copper pellets are removed from a 300 C oven and immediately dropped into 70.0mL of water at 17.0" C in an insulated cup. Part A What will the new water temperature be? Express your answer with the appropriate units. This content requires Adobe Flash Player 10.0.0.0. or newer, The burner on an electric stove has a power output of 2.0 kW. A 610g stainless steel tea kettle is filled with 20 degreeC water and placed on the already hot burner. If it takes 3.80min for the water to reach a boil, what volume of water, in cm3. was in the kettle? Stainless steel is mostly iron, so you can assume its specific heat is that of iron. Express your answer with the appropriate units. This content requires Adobe Flash Player 10.0.0.0 or newer.
Explanation / Answer
good
