A block of iron (c=448.00 J/kj°C) initially at temperature 6.00°C is dropped into an insulated container filled with 15.71kg of water ( cwater=4186.00 J/kg°C) at 93.00°C. They come to equilibrium at a final temperature of 39.00°C. Determine the mass of the iron block. _____kg

In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase reaction. Thermometer Stirring rod A student heats 63.43 grams of silver to 98.37 °C and then drops it into a cup containing 83.30 grams of water at 20.64 °C. She measures the final temperature to be 23.73 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.88 J/°C. Water Assuming that no heat is lost to the surroundings calculate the specific heat of silver. Metal sample Specific Heat (Ag) = J/g°C. 2000 Thomson-Brooks/Cole

The heating element of a water heater in an apartment building has a maximum power output of 34 kW. Four residents of the building take showers at the same time, and each receives heated water at a volume flow rate of 14x10-5 m³/s. If the water going into the heater has a temperature of 17°C, what is the maximum possible temperature of the hot water that each showering resident receives? Number i Units eTextbook and Media

93 J of work are done on the gas in the process shown in the figure. (Figure 1) Figure p (kPa) 200- 0 0 Vf 2Vf 3Vf 1 of 1 V Part A What is Vf in cm³ ? Express your answer in cubic centimeters. V₁ = = Submit VG ΑΣΦ Provide Feedback X Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining ? cm³

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4) A ground source heat pump heats a building by extracting heat from the ground and pumping it into the building. Define: Qc = heat extracted from the ground, Qn= heat pumped into the building, W = electric energy used by the heat pump, Tc= temperature of the ground, T = temperature of building (Qc, Qn, and W are positive by definition). Assume Tr > Tc. a) Draw a diagram showing energy flow in and out of the heat pump. b) Write a general expression for the change AS in the entropy of the "universe", that is the heat pump plus the cold and hot reservoirs, in terms of the quantities defined above. Now assume ideal (reversible) operation, and take Te= 10 °C and Tp= 20 °C. What is the coefficient of performance (ČOP) of the heat pump? By what factor would this change if we had Tc = 0 °C instead?

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To what temperature will 9400 J of heat raise 2.5 kg of water that is initially at 11.0 °C? The specific heat of water is 4186 J/kg · C°. Express your answer using three significant figures. ? T = C° Submit Request Answer

23.0 g of copper pellets are removed from a 300 degree C oven and immediately dropped into 100 ml of water at 25 degree C in an insulated cup . what will the new water temperature be? express answer in degree C

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