A gas is confined to a cylinder under constant atmosphericpressure, as illustrated in Figure 5.4. When 0.49 kJ of heat isadded to the gas, it expands and does 214 J of work on thesurroundings. What are the values of ΔH and ΔE for thisprocess?

Q: Two substances A and B, initially at different temperatures, arethermally isolated from their…

A: The relationship between the quantity of the heat absorbed/released in a system and the change in…

Q: A 25.0 g sample of an alloy metal was heated to 100.0oC and dropped into a beaker containing 90.0 g…

A:

Q: A small piece of calcium carbonate was placed in a constant-volume calorimeter (Ccal=0.488  kJ/°C),…

A: Given data :  1. Ccal=0.488 kJ/°C 2. Change in temperature = 3.5 oC

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: For the following processes, calculate the change in internalenergy of the system and determine…

A: Given data is as follows: Work done on the balloon, w = 382 J Amount of heat removed from balloon, q…

Q: the 10.0 g sample of metal is heated to 100.0 degrees celsius and then added to 20.0 g of water at…

A: The relationship between heat , specific heat capacity and change in temperature is given by the…

Q: A battery harnesses a chemical reaction to extract energy in the form of useful electrical work. (a)…

A:

Q: A mixture of nitrogen and argon gas is compressed from a volume of 15.0L to a volume of 11.0L, while…

A: From thermodynamics, work done is calculated as: w = -PΔV   Or, w = -P(Vf-Vi)   where Vf and Vi are…

Q: Solid carbon–C(s, graphite), gaseous hydrogen–H2(g), and thesugar glucose–C6H12O6(s) are all burned…

A: The standard reaction enthalpy is the sum of the standard enthalpies of the intermediate reactions…

Q: A gas is confined to a cylinder under constant atmosphericpressure, as illustrated in Figure 5.4.…

A: Given: Heat absorbed by the system = 824 J Work done on the system       = 0.65 kJ

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

A: Indicate which of the following is independent of the path by which a change occurs .

Q: Which statement is true of the internal energy of a system and itssurroundings during an energy…

A: The internal energy of a thermodynamic system is the energy contained within it. A negative ΔE…

Q: When 4.89 g of a salt dissolves in 149 mL of water (density = 1.00 g/mL) in a coffee-cup…

A: To determine the Heat (q) of the solution, the following formula can be used as-…

Q: When 1 mol of a gas burns at constant pressure, it produces2418 J of heat and does 5 J of work.…

A: When a gas burns at constant pressure we have P = constant. So, Pext = P of the gas container We…

Q: 5.115 A quantity of 50.0 mL of 0.200 M Ba(OH)2 is mixedwith 50.0 mL of 0.400 M HNO3 in a…

A: The balanced chemical equation is given as, BaOH2(aq)+2HNO3aq→BaNO32aq+2H2Ol The required amount of…

Q: 5.138 Metabolic activity in the human body releasesapproximately 1.0 × 104 kJ of heat per day.…

A: Given data: Mass of the body = 55kg Heat released by human body = 1.0×104 Heat of vaporization of…

Q: Lighters are usually fueled by butane(C4H1O). When 1 mole of butane burns at constant pressure it…

A: Given: Moles of butane= 1 mol Heat produced =2658 kJ Amount of work done=3 kJ  To Calculate: the…

Q: The change in internal energy for the combustion of 1.0 mol of octane at a pressure of 1.0 atm is…

A: since, p is constant, q = delta H

Q: A sample consisting of 3.0 mol CaCO3 (s) was heated to 800 oC, at which temperature the solid…

A: Interpretation - Given a sample consisting of 3.0 mol CaCO3 (s) was heated to 800 oC, at which…

Q: The decomposition of Ca1OH221s2 into CaO(s) and H2O1g2at constant pressure requires the addition of…

A: Enthalpy, H, is a state function which describes the amount of heat, qp, at constant pressure of a…

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: 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: For the transfer of heat from a cold object A at -24oC to a hot object B at +25oC, is the value of…

A: Generally, heat continues to transfer until both systems reach same temperature.

Q: Acetylene gas, C2H2(g), is used in welding. (a) Write abalanced equation for the combustion of…

A:

Q: The AH° of the reaction is -1367 kJ. Calculate the work done on the system at 25°C. C2H5OH(1) +…

A: Work done (w) : w = -∆ngRT  w = - ( 2 - 3) x 8.314 x 298  w = 2477.572 J w = 2.48 kJ

Q: 5.00 g of potassium hydroxide (molar mass = 56.1 g/mol) dissolves in 100.0 g of water and the…

A: The question can be solved by giveb formula,  Q=m×C×dT where Q = heat energy (Joules, J),  m = mass…

Q: A 13.6 g metal block is warmed to 79.7°C and plunged into an insulated calorimeter containing 46.2 g…

A:

Q: a) Calculate the heat released when the temperature of 1.6 mol of oxygen gas at 3.5 atm pressure is…

A: Given: Specific heat capacity of oxygen = 29.4 J/mol⋅ oC Moles of oxygen = 1.6 moles Initial…

Q: A block of CO2 weighing 15 g sublimes (converts from solid to gas) in a 5.0 L container at 25°C. How…

A: Given that the process is under isothermal conditions, this means that the process takes place under…

Q: Octane (C8H18) is a liquid hydrocarbon at room temperaturethat is a constituent of gasoline. (a)…

A: (a) Given reaction, Combustion of C8H18(l) to form CO2(g) and H2O(l)

Q: A piece of zinc at 20.0°C that weighs 60.0 g is droppedinto 200.0 g water at 100.0°C. The specific…

A: The final temperature reached by the zinc and the water has to be calculated,

Q: Three metal cylinders – one piece of iron, one piece of copper, and one piece ofaluminum – are…

A: Since heat capacity = specific heat capacity X mass  Specific heat capacities of metal are (using…

Q: How much work (J ) is required to compress a gas from 10L to 7L by exerting a constant pressure of…

A: work done in thermodynamical process is  W = P(V2 - V1)

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

A:

Q: The change in internal energy for the combustion of 1.0 mol of octane at a pressure of 1.0 atm is…

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: Limestone stalactites and stalagmites are formed in caves bythe following reaction:Ca2+ (aq) + 2…

A: The chemical reaction is as follows:

Q: You have a supply of ice at 0.0°C and a glass containing 150 g water at 25°C. The enthalpy of fusion…

A: Given that : Mass of Water (M1) = 150 g at Temperature (T1)= 25°C. The enthalpy of fusion for ice…

Q: When 8.36 g of a salt dissolves in 142 mL of water (density = 1.00 g/mL) in a coffee-cup…

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

Q: The value of ΔHcomb for dimethylphthalate (C10H10O4) is 4685 kJ/mol. How much heat was released…

A: we need to calculate the heat was released during the combustion of dimethylphthalate. the formula…

Q: How many moles of isooctane must be burned to produce 120,350 J of heat under standard state…

A: The number of moles of a substance is determined as the mass of the substance upon its molar mass.…

Q: What mass of silver is required to raise the temperature of silver from 156.0ºC  to 623ºC if 5012 J…

A: Formula used  Q = mCdT where Q = heat  m = mass , C = heat capacity dT = change in temperature

Q: 2.53 g of solid NaOH is dissolved in 100.00 g of water (total mass of solution = 102.53 g) in a…

A: The reaction given is NaOH(s) → NaOH(aq)                     ∆H° = - 43.0 kJ/mol  Hence we can say…

Q: Calculate the work done in joules when 2.0 moles of water vaporize at 1.0 atm and 100 degrees…

A: • As we can see the liquid water vaporzied to steam. • And in the phenomenon of vaporization there…

Q: 18. The combustion of propane is shown by the following equation: C,H;(g) + 50,(g) → 3CO,(g) +…

A:

Q: A heat engine operates between a hot source at 130.°C and a cold sink at 10.°C. How much work can be…

A: For carnot cycle, efficient is related to temperatures of hot source and cold sink

Q: An ideal gas sealed in a rigid 3.13-L cylinder, initially at pressure Pi=12.70 atm, is cooled until…

A: Given information, Volume of gas = 3.13 L Initial pressure (Pi) = 12.70 atm Final pressure (Pf) =…

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…