2. Calculate the pV work done (in Joules) when a gas expands from 3 L to 8 L against a constant external pressure of 5 bar. What is the sign of this work?

Q: A piston expands from 10 L to 20 L under an external pressure of 3 atm. what is the work in Joules?

A: The work done by a gas is given by  W = -PextΔV where ΔV = change in volume = final volume - initial…

Q: What are the signs for q and w to represent a system that's doing work on the surroundings, and…

A: “The relationship between heat with other forms of energy like light, mechanical work is studied…

Q: An experimenter adds 980 J of heat to 1.75 mol of an ideal gas to heat it from 10.0 ∘C to 25.0 ∘C at…

A:

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: 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: 5.2 b Calculate the magnitude of q for a system that does 7.05 × 105 kJ of work on its surroundings…

A: From given data W = -7.05×105 kJ ∆U = -9.55×103 kJ W is negative because work is done by system on…

Q: Calculate the work done (in Joules) during the combustion of hydrazine, a component of rocket fuel,…

A: For the given reaction, work done is calculated by using the formula as shown below : Work done =…

Q: A piston performs work of 217 L atm on the surroundings, while the cylinder in which it p,aces…

A: Record the given data,   Work done w = 217 L atm   Piston expands from 8L to 24 L.

Q: Calculate how much heat 32.0g of Iron (Fe) absorbs when it is heated from 25oC go 80oc. How many…

A: Heat is absorbed by a system to raise its temperature. During this process there can also be a…

Q: The same quantity of energy is added to 25.0 g pieces of gold ( molar heat capacity y = 25.41 J/ mol…

A: Given data,Mass of Au=Mg=Pt=25.0gCAu=25.41J/moloCCMg=24.79J/moloCCPt=25.95J/moloC

Q: How much themmal energy, in joules, is required to raise the temperature of a 27.34 g sample of…

A: Consider the given information is as follows; Mass of the sample of titanium mtitanium = 27.34 g…

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: 2. Calculate the molar heat capacity of rhodium, in J/mol.°C, given a specific heat of 0.244…

A:

Q: 12. The work done to compress a gas is 80 J. As a result, 20 J of heat is given off to the…

A: Given:-  As compression of gas, therefore work will be positive          w=+80J  And heat is given…

Q: The heat capacity of platinum (Pt, 195.1 g mol-1), is 26.0 J mol-1 K-1. Calculate the energy needed…

A: Q = n S ∆T  where  m = mass of the given metal = 66.6 g  n = W/M = 66.6 g/ 195.1 g/mol = 0.341 mol…

Q: Calculate the work (kJ) done during a reaction in which the internal volume expands from 23 L to 58…

A: Given data,Initial volume=23LFinal volume=58LPressure=0atm

Q: A 50.0 g sample of white phosphorus is heated from 298 K to 350 K. If its molar heat capacity, Cp is…

A:

Q: 6. The work done to compress a gas is 74 J. As a result, 26 J of heat is given off to the…

A:

Q: expanding gas does 171 J of work on its surroundings at a constant pressure of 1.02 atm. If the gas…

A: Work (w) = -171 J Pext = 1.02 atm Initial Volume (V1) = 68.0 mL        = 0.068 L Work = -Pext.(V2 -…

Q: 9. A diamond weighing 310 mg requires 2.38 J to raise its temperature from 23.4°C to 38.7°C. A.…

A: Specific heat capacity of the elements are given by ratio of amount of heat absorbed to the mass of…

Q: A sample of 1.04 g NH,NO3 (80.05 g mol-1) decomposes in a bomb calorimeter with a heat capacity of…

A:

Q: The work done to compress a gas is 67.0 J. As a result, 29.0 J of heat is given off to the…

A: Given, work done, w = +67.0 J Heat, q = -29.0 J

Q: mass

A:

Q: When 4.81 g of a solid mixture composed of NH4CI and Cačl2 was dissolved in 100.0 mL of water, the…

A: Please find your solution below :

Q: A 1.800-g sample of phenol (C6H5OH) was burned in a bombcalorimeter whose total heat capacity is…

A: The amount of heat released when given amount of compound undergoes combustion is known as heat of…

Q: How much heat is required to raise the temperature of a 75.0 gram sample of Titanium from 46.OC to…

A: The required amount of heat to increase the temperature of a compound can be determined by the…

Q: 1. What is the sign of q and w if heat is released from the system and work is done by the…

A: As the heat is released from the system that mean system lost some heat to the surroundings. So, q…

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 certain gas expands in volume from 2.0 L to 24.5 L at constant temperature. Calculate the work…

A:

Q: ΔEsys

A:

Q: 1. The combustion of a sample of aluminium produces 0.25 mol of aluminium oxide and releases 419 kJ…

A: The combustion reaction of aluminum is given by: Als + 34O2g  → 12Al2O3s The enthalpy change in…

Q: It takes 183 J of energy to raise the temperature of 118.4 g of zinc from 23.61°C to 27.58°C.…

A: Given, Heat energy required = 183J. Mass of zinc = 118.4g. Initial temperature = 23.610C. Final…

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: The work done to compress a gas is 70 J.  As a result, 25 J of heat is given off to the…

A: Work done to compress = Work done on the system And work done on the system is taken with a positive…

Q: Calculate the work, w, done in kJ when a gas contracts from 40.0 L to 5.0 L against a constant…

A:

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

A:

Q: Calculate the work done by a gas when its volume expands from 3.0L to 8.0L under atm. How much heat…

A: Work done (w) :  w =-Pext.Vf-Viw = -1×8.0-3.0w = - 5 L.atmw = -5 ×101.325 Jw = - 506.625 J   Given :…

Q: 11. The value of AE for a system that performs 213 kJ of work on its surroundings and loses 79 kJ of…

A: According to first law of thermodynamics, energy can neither be created nor be destroyed. It can…

Q: Calculate ΔE of a gas for a process in which the gas evolves 24 J of heat and has 9 J of work done…

A: Applying 1st law of thermodynamics  ΔE = q + w  where ΔE is change in internal energy , q = heat…

Q: Calculate the work, w, done in kJ when a gas contracts from 55 L to 25 L against a constant external…

A: We have to calculate the work done.

Q: Calculate a. q when a system does 54J of work and its energy decreases by 72 J b. ∆E for a gas that…

A: Interpretation-  To determine the q when a system does 54J of work and its energy decreases by 72 J…

Q: - A 150 g sample of metal at 75 °C is added to 150 g water at 15°C. The temperature of the water…

A: Given data   metal water mass 150 g 150 g t1 75 oC 15 oC t2 18.3 oC 18.3 oC   specific…

Q: 1. Calculate w for a system that absorbs 260 kJ of heat and for which AE = 157 kJ. Is the work done…

A:

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

A:

Q: 4. A 0.1375-g sample of solid magnesium is burned in a constant-volume bomb calorimeter that has a…

A: • Specific Heat Capacity = qm.∆T J/g• Specific Heat Capacity = q.mm.∆T J/mol.Where,q → heat…

Q: The work done to compress gas is 83.0 J. As a result, 33.0 J of heat is given off to the…

A: According to the 1st law of thermodynamics, the relation between change in internal energy, work…

Q: Calculate the work done ( in joules) when a perfect gas in a piston chamber expands from 2.00 L to a…

A: Pressure ( P ) = 1.75 atm Initial volume ( V1 ) = 2.00 L  Final volume ( V2 ) = 5.50 L  ΔV  = V2 -…

Q: III WICI a process occurs at constant external pressure. a) What is the sign of w for the system? Is…

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

Q: Calculate ΔE for a system that absorbs 506.0  kJ of heat from its surroundings and does 379.0  kJ of…

A: It is a given that a system absorbs 506 kJ of heat and the system does 379 kJ of work on the…