a balloon filled with ammonia gas is injected with water. the balloon feels warm to the touch and due to work from the surroundings shrinks in size. what is the sign for q in this process and why?

Q: You may have noticed that when you compress the air in a bicycle pump, the body of the pump gets…

A: Work is done on the system by the surroundings when the air is compressed in bicycle pump.…

Q: Write the balanced chemical equation for the combustion of methane, CH4(g), to give carbon dioxide…

A:

Q: When 2.26 g of a salt dissolves in 121 mL of water (density = 1.00 g/mL) in a coffee-cup…

A: heat  capacity is defined as amount of energy needed to raise unit temperature of an object.

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: The specific heat capacity of silver is 0.24 J/°C·g. Calculate the energy required to raise the…

A: Heat capacity is an extensive property.  But specific heat capacity is intensive property.  Heat…

Q: Which of the following signs on q and w represent a system that is doing work on the surroundings,…

A: From first law of thermodynamics ∆U = q+w Here ∆U = change in internal energy q = heat transfer w =…

Q: Determine the Sign of #H?

A: Answer Sign of H for a reaction

Q: Glucose metabolism involves multiple processes including glycolysis, glyconeogenesis and…

A:

Q: Specific Heat Capacities of common substances: Water (1) = 4.184 Iron (s) =0.45L Aluminum (s) = 0.89…

A:

Q: What are the signs of q and w if a system absorbs 180 J of heat while expanding (performing work on…

A:

Q: C) Calculate the change in internal energy in each process, the change in total internal energy and…

A:

Q: 9. If 10 L of an ideal gas at a pressure of 2 atm is cooled so that it contracts 1 at constant…

A:

Q: Imagine some helium in a cylinder with an initial volume of 1 liter and an initial pressure of 1…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

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: Which of the following signs on q and w represent a system that is doing work on the surroundings,…

A:

Q: During a breath, the average human lung expands about 0.50L. If this expansion occcurs against an…

A: Work in thermodynamics is the amount of energy that is transferred from one system to another system…

Q: Consider an ideal gas enclosed in a 1.00 L container at an internal pressure of 20.0atm. Calculate…

A: Given: Initial Volume V1 = 1.0 L Final Volume V2= 20.0 L External pressure P = 1.0 atm

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: Why not all endothermic processes that do work on the surroundings have the same sign for internal…

A: Endothermic processes are the processes which absorb heat energy from the surroundings. These…

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: 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: A chemical reaction is run in which 572Joules of work is done on the system and the internal energy…

A: Given W = + 572 J (work is done on the system) ΔU = +438 J Using the first law of thermodynamics…

Q: en the onowing (hypothetical) thermochemical equations: A+B2C; AH = -443 kJ A+ 3D2E; AH = -490. kJ…

A:

Q: Why are work, w, and heat, q, not state functions?

A: State function only depends on the final system and on the initial system, it does not depend how we…

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

A:

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: Identify the three statements from the list below that BEST describe the first law of…

A: Solution :      Thermodynamics is a branch of chemistry that shows the effects of heat, energy and…

Q: Which condition results to work done greater than the change in internal energy? AU > 0; AS > 0 Ο Δυ…

A: Here we have to verify options and check by the help of first law of thermodynamics.

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

A: The reaction given is, Given: Moles of Al2O3 produced = 0.25 mol. And the amount of heat released =…

Q: The energy density of a fuel is 64.36 kJ/g. A 63.61-g sample is burned in an apparatus with a…

A: The following  problem is solved through  calometric study as explained in next step

Q: What is the value of ∆? in a system wherein a car engine that releases heat pushing the piston,…

A: By FLOT Internal energy change for the system ( ∆U): ∆U = ∆q + w      = -325 - 451       = - 776 J

Q: Calculate the work done in joules when 0.500 g of solid sodium reacts with water to form hydrogen…

A: Given reaction; 2Na(s) + 2H2O(l) ⟶ 2NaOH(aq) + H2(g) Weight of Na metal = 0.500 g Moles of Na metal…

Q: During a breath, the average human lung expands by about .50 L. If this expansion occurs against an…

A: Work in thermodynamics is the amount of energy that is transferred from one system to another system…

Q: The accompanying photo shows a pipevine swallowtail caterpillarclimbing up a twig. (a) As the…

A: (a) The change in the potential energy will be observed when the caterpillar starts climbing the…

Q: T22    Repeat the previous question but give the answer in Joules. If 15.2 L of gas expands to 45.8…

A: When the work is done by the system then it is negative .  W= pdv

Q: Consider the reaction N2(g) + 3H2(g) → 2NH3(g) ΔHorxn = −92.6 kJ/mol  If 2.0 moles of N2 react with…

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

Q: 1 mole of an ideal gas is at 6 atm pressure, occupies 3 L and has an internal energy of 2735.1 J.…

A: Here the system undergoes two different paths.  Path-1 is constant volume process Path-2 is constant…

Q: The decomposition of hydrogen peroxide, H2O2, has been used to provide thrust in the control jets of…

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

Q: You have a cup of cold coffee and you placed it in a microwave oven to heat it until it boils.…

A: We know;  U = the internal energy of the system, a state function; q = heat;  w = thermodynamic…

Q: Which of the following signs on q and w represent a system that is doing work on the surroundings,…

A: The answer is as follows:

Q: For each of the following processes, indicate whether the signs of ∆S and ∆H are expected to be…

A: If in a reaction, heat is absorbed then  ∆H is negative, while if heat is released, ∆H is positive.…

Q: The standard molar enthalpy of formation for oxygen gas, O2(g), is zero. The enthalpy of formation…

A: Molar enthalpy of formation of a substance is the energy required or released when one mole of a…

Q: A chemical reaction is run in which 308 Joules of work is done on the system and the internal energy…

A:

Q: If energy flows into a chemical system and out of the surroundings, what is the sign of ΔEsurr?

A: Given that,  Energy flows into a chemical system and out of the surroundings

Q: A chemical reaction is run in which 633 Joules of work is done on the system and the internal energy…

A: Given: Work done = +633 J ( work is done on the system) Internal energy = +191 J

Q: For each of the following processes, indicate whether the signs of ∆S and ∆H are expected to be…

A: A dissociation reaction is a chemical reaction in which a reactant breaks apart into two or more…

Q: 1. The neutralization reaction that occurs between baking soda (sodium bicarbonate) and vinegar…

A: The neutrilization reaction between baking soda and vinegar produced water , carbon dioxide and…

Q: Consider what happens when a sample of the explosive TNT is detonated under atmospheric pressure.…

A: Given information,      A sample of the explosive TNT is detonated under atmospheric pressure

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 -…