there in 75 molecules of acetic acid, CH3CO2H? Which of the following is true for an engine that does 450kJ of work and releases 200kJ of unused heat? Select one: a. q > 0, w < 0 b. ΔU > 0 c. q > 0, w > 0 d. ΔU < 0

Q: 1) Calculate q when 430 kJ of energy has been released from a system that performed 110 kJ of work:…

A: Hi there! Thank you for the question, but as per our guidelines we can solve only one question at a…

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

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Q: A 455-g sample of nickel at 124oC is placed in 75.0 mL of water at 20.0oC. What is the final…

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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: 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: Acetylene is a gas used for welding metal. a. Write the balanced combustion reaction for acetylene,…

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Q: An ideal gas with a volume of 0.1m' expands at a constant pressure of 1.5 x 10ʻPa to tripe its…

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

Q: What is the change in internal energy for each of the following situations? q = 7.9 J out of the…

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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: Nitric acid, HNO3, can be prepared by the following sequence of reactions:4NH3(g) + 5O2(g) ⟶ 4NO(g)…

A: Here we have a multi-step reaction:

Q: 2. The muscles in our bodies work similar to that of a fuel cell, by metabolizing sugar (glucose) to…

A: Given: standard enthalpy of formation of glucose (s) = -1273.3kJ/mol standard enthalpy of formation…

Q: 22. What is the change in internal energy (AE) when a system is heated with 35 J of energy while it…

A: According to the 1st law of thermodynamics: change in internal energy = q + W where as, q--&gt;&gt;…

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

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Q: A gas absorbs 20.0 J of heat and then performs 13.1 J of work. Calculate the change in internal…

A: Given: Gas absorbed energy = 20.0 J And gas performs work = 13.1 J

Q: Oxygen gas at 34.5 °C is compressed from 45.7 L to 34.5 L against a constant pressure of 750 mmHg.…

A: We need to calculate work done by the system when oxygen gas is compressed from 45.7 L to 34.5 L at…

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: Given a system that absorbs 500 kJ of heat while doing 400 kJ of work, find the change in its…

A: Dear student since you have asked multiple questions but according to guidelines we will solve 1st…

Q: Which of the following represents a system that is exothermic and is doing work on the surroundings?…

A: Given information,     System is exothermic and doing work on the surroundings

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

A:

Q: What is the change in the internal energy of a gas that absorbs 225J of heat and expands from 10.0L…

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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: Suppose we have a closed, un-isolated system. When 483 J of heat was introduced to the system, it…

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Q: A gas is expanded in a cylinder from a volume of 2 L to 22 L by a constant pressure of 2 atm.…

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Q: A simple method for the laboratory preparation of hydrogen involves reaction of zinc with…

A: Using given information first calculate the moles of H2. PV=nRTn=PVRT=0.8731atm×0.7891L0.08206…

Q: a) Consider the reaction N2(8) + 3H2(g) 2NH3(g) AHn = -92.6 kJ If 2 moles of N2 reacts with 6 moles…

A:

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: While 60 J work is done on the gas, the internal energy increased to 1.8 kJ. What was the value of…

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

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: How much heat is released by a system when 45 J of work is done on it to decrease its energy to 23…

A: Since you have posted multiple questions, we will solve first one for you. To get the remaining…

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.…

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

A: According to 1st law of thermodynamics:-∆u=q+wwhere,∆u= cange in internal energyq= heat given to the…

Q: 6600 J of heat flow into 0.014 m of a monatomic gas at 1.5 x 10° N/m². The gas expands isothermally…

A: Given: Amount of heat flow into the system = 6600 J Pressure  = 1.5 x 105 N/m2 Initial volume of gas…

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

A:

Q: Consider the specific heat capacity of the following metals. Metal Specific heat capacity ( J/ kg K)…

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Q: If the gas in a cylinder has 357 J of work done on it by a piston, what is the change in volume of…

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Q: Three moles of an ideal gas are compressed from 5.5 × 102 to 2.5 × 102 m3 . During the…

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Q: A system gains 20.4 J of internal energy while doing 30.0 J of work. Does heat enter or escape from…

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

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

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Q: 3.2 kJ of heat is added to a slug of silver weighing 38.5 grams. The heat capacity of the silver…

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Q: 48  A 1.45 g sample of acetic acid , HC2H3O2 was burned in excess oxygen in a bomb calorimeter. The…

A: 1.45 g sample of acetic acid was burned in excess oxygen in a bomb calorimeter.Heat capacity of…

Q: Calculate the work (in kilojoules) done during a synthesis of ammonia in which the volume contracts…

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Q: Which of the following 1.00 mole of fossil fuel when burned (combustion in open atmospheres) will…

A: Work done by any system or on the system can be calculated by the formula , w = -P∆V