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![[2 point] Copper pennies weighing 2.5 g each have been placed in boiling water at 100°C. An insulated cup holds 100 g of wate](http://img.homeworklib.com/questions/774b16c0-72aa-11ea-bb34-6d0bb85258cb.png?x-oss-process=image/resize,w_560)
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[2 point] Copper pennies weighing 2.5 g each have been...
A coffee-cup calorimeter has 44.1 g of water at 23.7 °C. A sample of copper weighing...
A coffee-cup calorimeter has 44.1 g of water at 23.7 °C. A sample of copper weighing 12.7 g is heated in a boiling water bath to have an initial temperature of 100.0°C. The hot copper is then added to the water in the coffee-cup calorimeter. Given that the specific heat of solid copper is 0.385 J/(g·°C), calculate the final temperature of the water (and the copper) in the calorimeter.
please help me. Thanks A piece of copper metal weighing 36.3 g is initially at 100.0...
please help me. Thanks
A piece of copper metal weighing 36.3 g is initially at 100.0 degree C. It is dropped into a coffee cup calorimeter containing 50.0 g of water at a temperature of 20.0 degree C. After stirring, the final temperature of both copper and water is 25.0 degree C. Assuming no heat losses, an that the specific heat capacity of water is 4.184 J/g degreeC, what is the specific heat capacity of the copper in J/g degreeC?
Question 1. An insulated container is used to hold 54.0 g of water at 17.6°C. A...
Question 1. An insulated container is used to hold 54.0 g of water at 17.6°C. A sample of copper weighing 7.10 g is placed in a dry test tube and heated for 30 minutes in a boiling water bath at 100.1°C. The heated test tube is carefully removed from the water bath with laboratory tongs and inclined so that the copper slides into the water in the insulated container. Given that the specific heat of solid copper is 0.385 J/(g·°C),...
please show work? Question 34 (8 points) A 50.0 g sample of H20 at 100.00°C was...
please show work?
Question 34 (8 points) A 50.0 g sample of H20 at 100.00°C was placed in an insulated cup. Then 25.3 g of a metal at 25.00°C was added to the water. The temperature of the water dropped to 96.68°C. What is the specific heat of the metal in J/g°C? The specific heat of water is 4.184 J/g°C. Assume that the heat absorbed by the cup is negligible. Please report your answer to the correct number of significant...
1. Why does freezing point vary with different salts? 2. What does % ionization mean? Why...
1. Why does freezing point vary with different salts? 2. What does % ionization mean? Why should it be less than 100%? 3. Should the percent ionization be closer to ideal at high or low concentrations? 4. As you increase elevation the atmospheric pressure decreases, which means the boiling point of water also decreases. In Denver, the boiling point of water is 95 degrees C. - 4a. How many grams of NH4Cl (using van't Hoff factor of 1.699) would need...
1. What is the purpose of a constant volume gas thermometer. How does it work? 2. What is the difference, if any, betwee...
1. What is the purpose of a constant volume gas thermometer. How does it work? 2. What is the difference, if any, between a isothermal and adiabatic thermodynamic process. Draw them on a pV diagram. 3. Does the First Law of Thermodynamics apply to solids and liquids? Why or why not. 4. What is the most important heat transfer mechanism on earth where there is an atmosphere? Explain how this can cool a nuclear or coal fired power plant, and...
1. Calculate the change in internal energy ΔΕ when 15.6 kJ of heat is added to...
1. Calculate the change in internal energy ΔΕ when 15.6 kJ of heat is added to the system and 1.4 kJ of work is done to the system. 2. How much work can a bicycle pump perform when the the cylinder compresses from 3L to 2.5 L as you apply a pressure of 1.1 atm? J. A hot air baloon expands from 4,00,000L to 4.00,000L by the addion of 130,000000 of eat energy Calculate the change in energy of the...
Chemistry Please show complete work for the question 2.CALORIMETRY a) How many kiloJoules of energy are...
Chemistry
Please show complete work for the question
2.CALORIMETRY a) How many kiloJoules of energy are needed to raise the temperature of 1.50dm of water from 20.0°C to 47.0°c? b) The specific heats of three different liquid substances are listed as Carbon tetrachloride: 0.856 J/g'C Benzene: 1.74 J/g'C Acetic Acid: 2.05 An experimenter found that 1.42 kJ of heat energy raised the temperature of 19.70g of an unknown liquid substance by 36.4°C. What substance could this be? (Show all work)...
Part A and Part B. Please show all work. U AU - 5 LXTU 2. A...
Part A and Part B.
Please show all work.
U AU - 5 LXTU 2. A typical microwave oven uses radiation of wavelength 12.2 cm. a. How many moles of photons of this radiation are required to raise the temperature of 500.0 mL of water from 25°C to its boiling point? wavelengthil 1.63X10 TU b. A watt (W) is a unit of power- the rate at which energy is delivered or consumed (Power (W) = Energy (J)/time (s) or 1...
Please help solve and show work. Review Constants 1 Pe A 27.5-g aluminum block is warmed...
Please help solve and show work.
Review Constants 1 Pe A 27.5-g aluminum block is warmed to 65.0 °C and plunged into an insulated beaker containing 55.0 g of water initially at 22.2°C. The aluminum and the water are allowed to come to thermal equilibrium. ( Cs,H20 = 4.18 J/g • °C, Cs, al = 0.903 J/g • °C) Part A Assuming that no heat is lost, what is the final temperature of the water and aluminum? IVO ALQ R...
please help me. Thanks
A piece of copper metal weighing 36.3 g is initially at 100.0 degree C. It is dropped into a coffee cup calorimeter containing 50.0 g of water at a temperature of 20.0 degree C. After stirring, the final temperature of both copper and water is 25.0 degree C. Assuming no heat losses, an that the specific heat capacity of water is 4.184 J/g degreeC, what is the specific heat capacity of the copper in J/g degreeC?
please show work?
Question 34 (8 points) A 50.0 g sample of H20 at 100.00°C was placed in an insulated cup. Then 25.3 g of a metal at 25.00°C was added to the water. The temperature of the water dropped to 96.68°C. What is the specific heat of the metal in J/g°C? The specific heat of water is 4.184 J/g°C. Assume that the heat absorbed by the cup is negligible. Please report your answer to the correct number of significant...
1. Calculate the change in internal energy ΔΕ when 15.6 kJ of heat is added to the system and 1.4 kJ of work is done to the system. 2. How much work can a bicycle pump perform when the the cylinder compresses from 3L to 2.5 L as you apply a pressure of 1.1 atm? J. A hot air baloon expands from 4,00,000L to 4.00,000L by the addion of 130,000000 of eat energy Calculate the change in energy of the...
Chemistry
Please show complete work for the question
2.CALORIMETRY a) How many kiloJoules of energy are needed to raise the temperature of 1.50dm of water from 20.0°C to 47.0°c? b) The specific heats of three different liquid substances are listed as Carbon tetrachloride: 0.856 J/g'C Benzene: 1.74 J/g'C Acetic Acid: 2.05 An experimenter found that 1.42 kJ of heat energy raised the temperature of 19.70g of an unknown liquid substance by 36.4°C. What substance could this be? (Show all work)...
Part A and Part B.
Please show all work.
U AU - 5 LXTU 2. A typical microwave oven uses radiation of wavelength 12.2 cm. a. How many moles of photons of this radiation are required to raise the temperature of 500.0 mL of water from 25°C to its boiling point? wavelengthil 1.63X10 TU b. A watt (W) is a unit of power- the rate at which energy is delivered or consumed (Power (W) = Energy (J)/time (s) or 1...
Please help solve and show work.
Review Constants 1 Pe A 27.5-g aluminum block is warmed to 65.0 °C and plunged into an insulated beaker containing 55.0 g of water initially at 22.2°C. The aluminum and the water are allowed to come to thermal equilibrium. ( Cs,H20 = 4.18 J/g • °C, Cs, al = 0.903 J/g • °C) Part A Assuming that no heat is lost, what is the final temperature of the water and aluminum? IVO ALQ R...
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