A gas expands and does 256 J of work on its surroundings. At the same time it absorbs 220 J of heat from its surroundings. What are the values for q, w and  for the system?

Q: Calorimetry can also be used to determine nutritional Calories, which are actually kilocalories. One…

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Q: An 80.0 g sample of a gas was heated from 25 ∘C25⁢ ∘C to 225 ∘C.225⁢ ∘C. During this process, 346 J…

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Q: which of the following signs on q and w represent a system that is doing work on the surroundings…

A: Given :-  System is doing work on surrounding  System is gaining heat from surrounding  To…

Q: A sample of gas in a cylinder with a free-floating piston for a lid is heated. The gas gains 107 J…

A: given heat (q) = 107 J work done (w) = 23 J

Q: A gas expands from 223 mL to 908 mL at a constant temperature. Calculate the work done (in joules)…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: What is the heat capacity of mercury in J⋅mol−1⋅∘C−1?

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Q: If a system has 225 kcal of work done to it, and releases 5.00×102 kJ of heat into its surroundings,…

A: The internal energy change is expressed as follows, ∆U=q+W From given information it is clear that…

Q: A gas is warmed and gains 48J of heat. The gas expands as it is heated and work is done by the…

A: Answer : We have to calculate energy ,work and heat . Explanation :   Since gas is warmed so system…

Q: A system initially has an internal energy U of 501 J. It undergoes a process during which it…

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Q: One way to do this is to use a common metal of known heat capacity. In the laboratory a student…

A: Given data,Mass of Cu=94.51gMass of water=84.28gInitial temperature of Cu=97.88oCInitial temperature…

Q: 5. 2 8. PPM

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Q: system that is doing work on the surroundings and also gaining heat from surroundings

A: Option 4. Is correct-> q= positive, w= positive We concentrate on the effect that a system (such…

Q: A researcher studying the nutritional value of a new candy places a 5.80 g5.80 g sample of the candy…

A: The temperature change is 2.66°C or 2.66K The heat energy corresponds to the burning of 5.80g of…

Q: A gas expands and does PV work on its surroundings equal to 323 J. At the same time, it absorbs 1.20…

A: According to the first law of thermodynamics the change in internal energy is the sum of work don…

Q: A chemical reaction requires 452.3 kJ of heat and performs 87.0 kJ of work on the surroundings. What…

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Q: Q1a: What is the change in internal energy of a system (ΔU) if 5.42 kl of heat is absorbed by the…

A: A. From the first law of thermodynamics:  Q + W = ∆U ...(1) Here, Q = +5.42 kJ (as heat absorbed by…

Q: which of the following signs on q and w represent a system that is having work done on it by the…

A: • Sign Convention for Work, w i) w is positive, when work is done on the system by the surroundings…

Q: What is the value of ΔU for a system that performs 197 kJ of work on its surroundings and loses 179…

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Q: In a process, the surroundings do 200 J of work on a gas, and the total energy change of the gas is…

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Q: If the reaction of 2.5 g of Ca transfers 487 J of heat to a solution in a calorimeter (i.e. qsoln =…

A: Given : Mass of Ca reacting = 2.5 g And amount of heat transferred to the solution = 487 J Atomic…

Q: Calculate the overall change in internal energy, AU, (in joules) for a system that absorbs 500 J of…

A: GIVEN: Heat absorbed = 500 J = q Work done = 300 J = w Change in internal energy (∆U)= ?

Q: Calculate the energy required to heat 629.0mg of ethanol from −2.4°C to 19.9°C Assume the specific…

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Q: What is the change in internal energy (in J) of a system thatreleases 675 J of thermal energy to its…

A: Thermodynamics is the branch of chemistry which deals with the study of heat and other forms of…

Q: A system absorbs 455 J of energy and at the same time 514 of work was done on it. What is the change…

A: Consider the given information is as follows; Q (amount of heat absorbed) = + 455 J Work done on the…

Q: A researcher studying the nutritional value of a new candy places a 4.60 g4.60 g sample of the candy…

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Q: Calculate the energy required to heat 0.20kg of cyclohexane from 14.5°C to 31.6°C Assume the…

A: Given : Mass of cyclohexane = 0.20 Kg = 200 g                                        (since 1 Kg =…

Q: A researcher studying the nutritional value of a new candy places a 5.10 g5.10 g sample of the candy…

A: A calorimeter is analytical instruments used for the measurement of the amount of heat present in a…

Q: Having just invented a new type of calorimeter, Dr. Covey needs to determine the heat capacity of…

A: Mass of water (m) = 56.439 g Specific heat capacity of water (s) = 4.18 J/goC Initial temperature of…

Q: A chemical reaction is run in which 648 Joules of heat are absorbed and the internal energy changes…

A: Since the change in internal energy ΔE is given by  ΔE = q + w where q = heat absorbed by the system…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 412.0 mg sample…

A: The molar heat capacity of a compound is defined as the amount of heat required to raise the…

Q: A system releases 466 kJ of heat to its surroundings. At the same time, 202 kJ of work is done on…

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Q: Consider the following reaction in a vessel with a moveable piston. R (g) + T (g) -> X (g) As the…

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Q: 1 A chemist carefully measures the amount of heat needed to raise the temperature of a 532.0 mg…

A: Given that: Mass of the substance is m = 532.0 mg = 0.532 g.…

Q: A gas is compressed at constant temperature from a volume of 6.22 L to a volume of 2.36 liters by an…

A: Work done in the compression of the gas can be calculated by the formula :                  W=-…

Q: A researcher studying the nutritional value of a new candy places a 5.00 g5.00 g sample of the candy…

A: Given: Temperature change = 2.95 ∘C = 2.95 K heat capacity of the calorimeter = 29.70 kJ⋅K−1 mass of…

Q: suppose that a system gives off 50.1 kJ of heat and has 300. J of work done on it.   What is the…

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Q: system releases 350 kJ of heat to its surroundings. At the same time, 250 kJ of work is done on the…

A: Calculate internal energy of the system ?

Q: A system releases 354 kJ of heat to its surroundings. At the same time, 115 kJ of work is done on…

A: given that heat released 354kj ihe heat is released it should be negtive(-354kj) work done on the…

Q: An 80.0 g sample of a gas was heated from 25 ∘C to 225 ∘C. During this process, 346 J of work was…

A: The heat transferred during the reaction can be determined from the given equation. The temperature…

Q: researcher studying the nutritional value of a new candy places a 3.90 g3.90 g sample of the candy…

A: First calculate heat released by multiplying heat capacity and change in temperature convert joule…