A sample of liquid absorbs 13.5 kJ of heat and does 1.8 kJ of work when it vaporizes. Calculate ∆E (in J).

Q: A 25.0 g block of copper (specific heat capacity 0.380 J/g･°C) at 81.2 °C is placed into 500.0 g of…

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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: se the Standard Enthalpies of Vaporization and Fusion given below to answer the following question .…

A: Enthalpy of fusion is given to be 6.01 kJ/mol. This means that 6.01 kJ of heat is released when 1…

Q: If we define the system as the reactants and products, what is the sign of work in this process,…

A: According to the first law of thermodynamics, the internal energy of a system can be changed by…

Q: A gas expands from a volume of 0.754 L to 3.25 L against a constant pressure of 1.15 atm. What is…

A: Nearest value is  -2. 91J so first option seems to be correct.

Q: A 356 g sample of nitrogen goes through a temperature change of +71.43 °C. The J specific heat…

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Q: A system absorbs 21.6 kJ of heat while performing 6.9 kJ of work on the surrondings. If the initial…

A: Apply first law of thermodynamics.

Q: The specific heat capacity of scandium is 0.567 J/g °C. How many joules are given off when 81.53g of…

A: Given  Mass of scandium = 81.53 gram  Initial Temperature ( T1 )   = 574.2 ℃ Final Temperature ( T2…

Q: O An office worker claims that a cup of cold coffee on his table warmed up to 80°C by picking up…

A: We know that Heat flows from a higher temperature to lower temperature.  Therefore, there is no…

Q: A 25.0 g block of copper (specific heat capacity 0.380 J/g °C) at 32.6 °C is placed into 500.0 g of…

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Q: Consider the reaction: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l), ΔH = –1.37 × 103 kJ When a 2.23 mol…

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Q: 5.94 Calculate the work done (in joules) when 1.0 moleof water is frozen at 0°C and 1.0 atm. The…

A: As, work done w = -P∆V; where P is pressure and ∆V is change in volume. Here, P = 1.0atm ∆V = 0.0196…

Q: A 25.0 g block of copper (specific heat capacity 0.380 J/g･°C) at 47.2 °C is placed into 500.0 g of…

A: We have to calculate the temperature change for the Copper block.

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

A: Given that : Amount of heat energy absorbed = 150 J Work done by the system = 210 J We have to…

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: A sample of hydrogen gas is kept in a container with a piston. Recall that 1 L atm = 101.3 J. If the…

A: Given data :  Volume (V1) = 1.0 L  Volume ( V2) = 4.5 L  To calculate : work done Against a vacuum…

Q: 5.19 Consider these changes. At constant pressure, in which of the reactions is work done by the…

A: The work performed by the compression as well as expansion of a fluid is known as pressure–volume…

Q: 1. A system is compressed from 50.0 L to 5.0L at a constant pressure of 10.0 atm. What is the amount…

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Q: Indicate which of the following is independent of the pathby which a change occurs: (a) the change…

A: (a) Potential Energy can be defined as the energy possessed by the object by virtue of its position,…

Q: In a gas expansion,  9.0  ×  101  J of heat is absorbed by the system, and the energy of the system…

A: According to the first law of thermodynamic;

Q: A 25.0 g block of copper (specific heat capacity 0.380 J/g･°C) at 42.4 °C is placed into 500.0 g of…

A: Given, For copper block: Mass of the copper block (mCu) = 25.0 g Specific heat capacity of copper…

Q: energy (in joules) is needed to heat 200.0 g of water by 10.0 C? The heat capacity of water is…

A: The energy in joules that is needed to heat 200.0 g of water by 10.0 degrees Celsius is to be…

Q: When 1 mole of methane (CH4) is burned at constant pressure, 890 kJ of energy is released as heat.…

A: Given, When 1 mole of methane (CH4) is burned at constant pressure, 890 kJ of energy is released as…

Q: A mixture of helium and neon gas is expanded from a volume of 87.0L to a volume of 96.0L, while the…

A: Work done = pressure x change in volume

Q: A cylinder contains a gas under constant atmospheric pressure. When 0.434 kJ of heat is added to the…

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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 25.0 g block of copper (specific heat capacity 0.380 J/g·°C) at 88.0 °C is placed into 500.0 g of…

A: Given that,weight of Cu =m1=25gSpecific heat capacity of Cu=S1=0.380J/g°cInitial temerature of…

Q: A 25.0 g block of copper (specific heat capacity 0.380 J/g･°C) at 44.6 °C is placed into 500.0 g of…

A: We have to calculate the change in temperature for metal block.

Q: A sample of aluminum metal absorbs 9.86 J of heat, and the temperature of the sample increases from…

A: The specific heat of a substance is defined as the amount of heat required to raised the temperature…

Q: Calculate ΔE for the combustion of a gas that releases 471.8 kJ of heat to its surroundings and does…

A: Given: Heat = 471.8 kJ Work = 97.2 kJ

Q: The average human lung expands by about 0.50 L during each breath. If this expansion occurs against…

A: In the case of expansion, the system loses energy to the surroundings so work done by the system is…

Q: When a 10.0 g metal sample (0.85 J/goC) at 110.oC is placed in an insulated cup of water at 25oC,…

A: According to Law if calorimetry Heat absorbed by a system = heat released by another system Here the…

Q: The value of ΔE in kJ, for a system that does 213 kJ of work on its surroundings and loses 79 kJ of…

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Q: The value of ΔE for a system that performs 213 kJ of work on its surroundings and loses 79 kJ of…

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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: Consider heating 1.0 kg of water at a constant pressure of 1 atm. How much heat is needed to raise…

A: Given : Mass of water = 1 kg = 1000g Pressure = 1 atm Initial temperature, t1 = 25°C Final…

Q: A sample of nitrogen gas expands in volume from 1.6 to 5.2 L at constant temperature. Calculate the…

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Q: A 75.0 g piece of iron (CP = 25.09 J/(mol · °C)) was heated to a temperature of 47°C and then placed…

A: Mass of iron piece , mi=75.0 gSpecific heat capacity , Cp=25.09 Jmol.°CInitial Temperature ,…

Q: The specific heat of a certain type of cooking oil is 1.75 J/(g⋅°C).1.75 J/(g⋅°C). How much heat…

A: Q = m . s . (T2 -T1) Where, Q = heat absorbed; m = mass of substance in g; s = specific heat of…

Q: When gasoline is burned at constant pressure, some heat is released and some work is done. Which of…

A: The heat exchange, q, at constant pressure, P, is the enthalpy change, ΔH, for the system so ΔH =q.

Q: 3. How much energy is required to heat a 495g copper cooking pot containing 870.0g of water from…

A: According to calorimetric principle, the heat energy required to raise the temperature of colder…

Q: A 25.0 g sample of granite at 100.0 °C was added to 100.0 g of water at 25 °C, and the temperature…

A: The specific heat of the substance is represented as ‘c’. The relation between specific heat, heat…

Q: A 340.9 g sample of silver is subjected to a temperature change of -34.29 °C. The specific heat…

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

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 of…

A: ⊙We know that,            ◁E=q+w          ◁E→Internal energyq→heatw→work⊙For work(w)…

Q: Consider the following changes:a.N2 (g) → N2 (l)b.CO (g) + H2O (g) → H2 (g) + CO2 (g)c.Ca3P2 (s) +…

A: Work done: The work is a transfer of energy from one system to another system without the change in…

Q: A gas absorbs 28.5 J of heat and then performs 15.2 J of work. the change in internal energy of the…

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Q: A 149.2-g sample of a metal at 74.4°C is added to 149.2 g H20 at 15.5°C. The temperature of the…

A: Given: Specific heat of water = 4.18 J/g. oC Mass of metal = 149.2 g Mass of water = 149.2 g.…

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

A: Given diagram,

Q: A 151.6-g sample of a metal at 74.7°C is added to 151.6 g  at 15.9°C. The temperature of the water…

A: Since Q = mCΔT  where Q = heat  m = mass  C = specific heat  ΔT = change in temperature = final…

Q: THERMODYNAMICS Q) The work done when a gas is compressed is 500 J. During the compression, the gas…

A: