A 19.2 g quantity of dry ice (solid carbon dioxide) is allowed to sublime (evaporate). Calculate the expansion work done in kJ against a constant external pressure of 0.995 atm and at a constant temperature of 22°C. Assume that the initial volume of dry ice is negligible and that CO2 behaves like an ideal gas. (mwt of CO2=44 g/mol, 1 atm = 101.325 kPa/1 atm, 1 J = 1 L kPa) a.    465   b.    1069   c.     -10.5   d.   10.5   e.     -1.06

Q: Zn metal reacts with hydrochloric acid according to the balanced equation Zn(s) + 2 HCl(aq)…

A: Given data:

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:

Q: A 100.0 g piece of metal at 100°C is placed in contact with 50.0 g of water (s = 4.184 J g–1 °C–1)…

A:

Q: Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 36…

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: A 5.00 mol sample of an ideal gas is compressed irreversibly and isothermally m an initial volume of…

A:

Q: Calculate the work, in joules, done by a gas as it expands at constant temperature from a volume of…

A: During the expansion of a gas at constant temperature the work done by the system is given by:   w…

Q: Two objects are brought into contact. Object #1 has mass 0.97 kg, specific heat capacity 0.24 J g-¹…

A: When the thermal equilibrium is reached, Heat released by object #1 = Heat absorbed by object #2

Q: A 2.50 g sample of powdered zinc is added to 100.0 mL of a 2.00 M aqueous solution of hydrobromic…

A:

Q: 4. The work done in the isothermal, reversible expansion or compression of an ideal gas from volume…

A: We have to calculate  workdone by the gas in isothermal  reversible expansion of one mole of ideal…

Q: In the following experiment, a coffee-cup calorimeter containing 100.0 mL of H2O is used. The…

A: The mass of CaCl2 added to water is = 9.20 g The enthalpy of dissolution of CaCl2 is = -82.8 kJ/mol…

Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 244. kJ during a…

A: Given:Change in enthalpy Where the positive sign indicates heat is addedWhere the positive sign…

Q: Gases are sold and shipped in metal tanks under high pressure. A tank of compressed air has a volume…

A: The objective of this question is to find the work done in filling the tank.Given that

Q: A 10.0 g sample of liquid ethanol (C2H5OH(l)) is placed inside a constant-pressure calorimeter with…

A: Ethanol is burnt with excess air in a constant-pressure calorimeter.Heat capacity of calorimeter =…

Q: 50.0 mL of 1.00 M HCl(aq) and 100.0 mL of 1.00 M NaOH(aq), both at 25.0oC, are added together in a…

A: Total volume of the solution, (V) = (50 + 100) mL = 150 mL. The density of the solution, d = 1 g/mL.…

Q: 9.45 mol of a monoatomic perfect gas with an initial volume of 10.33 L and temperature of 204 K…

A: 1) Constant external pressure so, P1 = P2 = 1.35 atm Number of monoatomic gas, n = 9.45 mol Initial…

Q: A sample of methane of mass 45.0 g occupies a container at 310 K. Calculate the work done when the…

A:

Q: The heater used in a 4.33 m x 3.60 m x 2.86 m dorm room uses the combustion of natural gas…

A:

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: Work is done in this reaction when the H2 gas expands out of the test tube and pushes the atmosphere…

A: Explanation When H2 gas expands and pushes the atmosphere outside that is work is done by the gas…

Q: The specific heat capacities of the metals nickel, zinc, rhodium, tungsten, gold, and uranium at…

A: Given information: Specific heat capacities of the metals nickel, zinc, rhodium, tungsten, gold, and…

Q: In a system composed of nitrogen gas in a cylinder fitted with a piston, when 2.00 kJ of energy is…

A: Answer:- This question is answered by using the simple concept of calculation of change in internal…

Q: A five liter cylinder contained 2 moles of oxygen gas at 20°C. Due to sudden leakage through the…

A: Initial volume (V) i = 5 L, P = 1 atm, T = (20 + 273) = 293 K, n = 2 moles From ideal gas law, P (V)…

Q: When 50.0 mL of 1.24 M of HCI(aq) is combined with 50.0 mL of 1.32 M of NaOH(aq) in a coffee-cup…

A:

Q: A 2.50 g sample of powdered zinc is added to 100.0 mL of a 2.00 M aqueous solution of hydrobromic…

A:

Q: Calculate the work (in J) associated with the expansion of a gas from 14.8 L to 44.3 L at a constant…

A: Given data :  Initial volume, V1 = 14.8 L  Final volume, V2 = 44.3 L  External Pressure, Pext = 3.52…

Q: A piece of metal weighing 8.00 g  at a temperature of 46.0 oCo was placed in a calorimeter in 38.10…

A: Given Mass of metal         = 8.00 g Initial temperature = 46.0 °C Final temperature  = 25.7 °C…

Q: When nitroglycerin explodes, the chemical reaction that occurs can be assumed to be C3HsN3O9(1) →…

A: The reaction for the explosion of nitroglycerin is given below : C3H5N3O9(l)  →  3CO2(g)  +  32N2(g)…

Q: (a 7. A 5.00 mol sample of an ideal gas is compressed irreversibly and isothermally at 150.00 K from…

A: Work done in an irreversible and isothermal compression is calculated as: W=-nRTPext1P2-1P1…

Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 175. kJ during a…

A: Answer :- 1. Change in enthalpy of gas mixture = ∆H = -254 kJ 2. Exothermic…