A certain closed system absorbs 150 J of heat and does 210 J of work. Which of the following about this system is TRUE? Select one: a.Einitial = Efinal b.ΔEsystem = 0 c.Einitial > Efinal d.Einitial < Efinal

Q: The specific heat capacity of water (l) is 1.18 J/g∙℃. What is the molar specific heat capacity of…

A: Given:specific heat capacity of water (l) = 1.18 J/g∙℃.molar mass of water = 18.01 g/mol.

Q: The heat capacity of silver (Ag, 107.9 g mol-1), is 0.232 Jg K-1. Calculate the energy needed to…

A: Given:-         Heat capacity CP=0.232 J/g‐K                                      q=?        No.…

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: Find the work energy, w, gained or lost by the system when a sample of gas expands from 10 L to 30 L…

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Q: What is the change in internal energy of the system   (ΔU)  if   50 kJ   of heat energy is released…

A: Given - Heat energy released (q)= 50KJ              Work done by the system (w)= 40KJ   We have to…

Q: How much work, w, must be done on a system to decrease its volume from 10.0 L to 3.OL by exerting a…

A: Given, Initial volume = 10 L Final volume = 3 L Pressure = 6 atm

Q: a) What is the molar heat capacity of liquid water?   J/mol oC (b) What is the heat capacity of…

A: Heat capacity is the heat absorbed by fixed amount of respective substance.

Q: Calculate the quantity of heat required to increase the temperature of 1.0 kg brass statue standing…

A: We know that, the heat absorbed  or released is given by : Q = m × C × (T 2 - T 1) Where Q = heat…

Q: A reaction releases 173 J of energy while doing 42 J of work. Determine the change in internal…

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Q: A metal bar with specific heat capacity of 0.225 J/g C requires 6440 J of energy to change its…

A: ∆T = 96-21 = 75 °C  m =?  Heat added =6440.J  Cp = 0.225 J/g°C

Q: What is the change in internal energy for each of the following situations? q = 7.9 J out of the…

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Q: A coffee-cup calorimeter is used to determine the specific heat of a metallic sample. The…

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Q: A 0.80g sample of caffeine (Mm=194.19g/mol) burns in a constant-volume calorimeter that has a heat…

A: Given,  Mass of the caffeine, m = 0.80 g Molar mass of caffeine is 194.19 g/mol Heat capacity, c =…

Q: A 25.0 g block of copper (specific heat capacity 0.380 J/g･°C) at 49.2 °C is placed into 500.0 g of…

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Q: If the same amount of energy in the form of heat is added to 19.5 g samples of each of the metals…

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Q: A piece of metal weighing  5.10 gg   at a temperature of  48.5 ∘C∘C   was placed in a calorimeter in…

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Q: Calcuate the amount of heat in kJ neccessary to raise the temperatue of 50.0 g of a substance by…

A:

Q: A certain closed system absorbs 150 J of heat and does 210 J of work. Which of the following about…

A: Given: Work done by the system = 210 J And heat absorbed by the system = 150 J

Q: A 7.00 g sample of liquid water at 25.0 °C is heated by the addition of 147 J of energy. The final…

A: Heat absorbed by water  = mass of water × Specific heat capacity × temperature change  Temperature…

Q: A system expands from a volume of 1.00 L to 2.00 L against a constant external pressure of 1.00 atm.…

A:

Q: What is the change in the energy of surroundings when the system absorbs 17.5 kJ of energy and…

A: It is given that system absorbs 17.5 kJ of energy and the work done is 5×103 J. It is known that 1 J…

Q: A 45.0 g sample of an alloy was heated to 90 oC and then dropped into a beaker containing 82.0 g of…

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Q: Calculate the quantity of heat required to increase the temperature of 1.0 kg brass statue standing…

A: Q = ms∆T here  Q = heat transfer  m= mass  s = specific heat ∆T = temperature difference

Q: What is the work (in J) done on the system to compress an inert gas from 24.0 L to 12.5 Lagainst a…

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Q: Use the thermochemical data that follow to calculate the value of ΔH° for the reaction: 4 B  2 A + C…

A: Thermochemistry can be defined as the branch of chemistry that deals with heat energy associated…

Q: 20.0 g sample of aluminum (specific heat = 0.902 J g-1 C-1) with an initial temperature of 48.6C…

A: Given that: Mass of aluminium(m) = 20.0g  Specific heat (C) = 0.902J/g°C Initial temperature(Ti) =…

Q: A0.1857 g sample of the generic hydrocarbon CxHy was burned in a constant volume calorimeter. As a…

A: Given: Mass of hydrocarbon reacted = 0.1857 g. Heat of combustion of hydrocarbon =71.34 KJ/g = 71340…

Q: Calculate the work gained or lost by a system when a gas expands from 15 L to 40 L against a…

A: In the given process the gas is expanding. Hence the system will work on the surroundings and the…

Q: A 25.0 g block of copper (specific heat capacity 0.380 J/g･°C) at 73.4 °C is placed into 500.0 g of…

A: Since the copper block is at higher temperature, it will release heat, whereas water will absorb…

Q: Calculate the change in internal energy (ΔU) for a system that is giving off 25.0 kJ of heat and is…

A: The first law of thermodynamics states that the change in internal energy of a system equals the net…

Q: A gas absorbs 15.2 J of heat and then performs 15.2 J of work. The change in internal energy of the…

A: Given: Heat absorbed= 15.2 J             Work done= 15.2 J To find : change in internal energy…

Q: Calculate q

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Q: SPECIFIHEAT OF COMMON PURE SUBSTANCES Given the data at the left, which do you think SPECIFIC HEAT…

A: Specific heat capacity It is the amount of heat energy that must be supplied to increase the…

Q: 2. A rubberized, cubic chamber was filled with butane gas and was expanded from 3.0L to 4.5L at a…

A: According to first law of thermodynamics, we have dU = q + w      -----(1) Where, dU is change in…

Q: - In which of the following systems is(are) work done by the surroundings on the system? Assume…

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Q: What is the change in internal energy of the system (AU) if 82 kJ of heat energy is absorbed by the…

A: According to the first law of thermodynamics, the internal energy is equal to the sum of heat…

Q: 19.64 g H2SO4 dissociated in 100.0 g of water in a coffee cup calorimeter. The temperature rose from…

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Q: When 2046 J of heat energy is added to 47.6 g of hexane, C6H14, the temperature increases by 19.0…

A: In this question we want to determine the value of molar heat capacity of hexane.  You can see…

Q: A certain closed system absorbs 150 J of heat and does 210 J of work. Which of the following about…

A: Since you have posted multiple unrelated questions, we are entitled to answer the first only.

Q: Find the work energy, w, gained or lost by the system when a sample of gas expands from 10 L to 30 L…

A: We have to predict the work gained or lost.

Q: A system gains 20.4 J of internal energy while doing 30.0 J of work. Does heat enter or escape from…

A: From first Law of Thermodynamics , the total change in internal energy of the system can be…

Q: A 12.65-g block of solid titanium at 14.63 °C is immersed in a 24.49-g pool of liquid propylene…

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Q: Calculate the quantity of heat required to increase the temperature of 1.0 kg brass statue standing…

A: The heat required can be calculated by using general formula , Q = mC (Tf - Ti) Here, Q = Heat…

Q: Consider the accompanying energy diagram. (a) Does thisdiagram represent an increase or decrease in…

A: Given diagram,

Q: A Bar Of Aluminum Of Mass 45.5g Is Heated From 293K To 85°C. How Much C Heat Is Absorbed By The…

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

Q: The combustion of 2.495 g of propanol (C3H7OH) increases the temperature of a bomb calorimeter from…

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Q: Which of the following 1.00 mole of fossil fuel when burned (combustion in open atmospheres) will…

A: Work done by any system or on the system can be calculated by the formula , w = -P∆V

Q: In an experiment, 9.80 g of olive oil at 80.0 degrees celisus are quickly transferred to water in a…

A: Given:Mass (m) of olive oil at 80.0 oC is 9.80 gThe temperature of water in the calorimeter is…