The air in an inflated balloon (defined as the system) is warmed over a toaster and absorbs 130 J of heat. As it expands, it does 77 kJ of work. What is the change in internal energy for the system? Express the energy in kilojoules to two significant figures.

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 129.0 mg sample…

A: Mass of sample = m = 129 mg = 0.129 g Initial temperature = T1 = - 9.6°C Final temperature = T2 =…

Q: If 4.0 grams of water at 1ºc absorbs 33 joules of heat, what will be the change in temperature of…

A: Given,Mass of water= 4gTemperature = 1 degree Celsius.Heat = 33J

Q: A heat pump is an electrical device that heats a building by pumping heat in from the cold outside.…

A:

Q: The mixture of gas and air inside a cylinder reacts, releasing 400kJ total energy. If the system…

A: Given:   The total energy is 400 kJ. The work done by system is 250 kJ.

Q: A jeep performs 10,000 joules of work on its surroundings and releases 20,000 joules of heat. How…

A: The internal energy of a system is a state function (depends only on the initial and final state).…

Q: Enter your answer in the provided box. A system conducts 197 cal of heat to the surroundings while…

A: Recall the following expression from first law of thermodynamics          ∆U=q + w amount of heat…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.87 kg sample…

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Q: 1-  During a chemical reaction, which of the following statements is ALWAYS true?  I) A system…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 569.0g sample…

A:

Q: The gas in a piston (defined as the system) is warmed and absorbs 645 J of heat. The expansion…

A: Given:Heat absorbed = 645 JWork performed =  340 JWhat is the change in internal energy ?

Q: Q1:- Find the external work done by the system in kcal, when 10 kcal of heat is supplied to the…

A: ✓The First Law of Thermodynamics states that heat is a form of energy, and thermodynamic processes…

Q: What is the volume of ethanol required to heat 200.0g of water by 10.0 celsius? The density of…

A: Note: Thank you for question. Since the Heat combustion of ethanol and Specific heat of water is not…

Q: repair crews to weld rails together. -) Ⓡ 2Fe(s) + Al2O3(s) DH rxn= -850 kJ -n, in grams, is formed…

A: Exothermic process is the one in which energy is liberated from the system to the surrounding in the…

Q: The mixture of gas and air inside a cylinder reacts, releasing 400 kJ of total energy. If the system…

A: 150 kJ of heat is released from the system

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.25 kg sample…

A:

Q: Chargers for cell phones get warm while they are being used. Some of the energy that they are using…

A:

Q: A sample of gas is cooled, releasing 94 J of energy. The change in internal energy for the gas is…

A: According to the first law of thermodynamics, the energy of the universe remains constant. For a…

Q: hemist carefully measures the amount of heat needed to raise the temperature of a 886.0 mg sample of…

A: Specific heat capacity is amount of heat needed to increase one gram of substance by one degree

Q: A system releases 925 J of energy to the surroundings as heat while 211 J of work was done on the…

A: Consider the given information is as follows; Q (heat releases to the surrounding) = -925 J…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.50 kg sample…

A:

Q: A system absorbs 191 kJ of heat and the surroundings do 110 kJ of work on the system. What is the…

A: Given:Heat energy Q = 191 kJ.Work done on the system W = 110 kJ.

Q: The energy absorbed by a certain system is -130 kj . If the system does 90kj of work on the…

A:

Q: In the laboratory a student finds that it takes 79.6 Joules to increase the temperature of 14.8…

A: The specific heat capacity of copper (C) can be calculated using equation (1). In this equation, m…

Q: A 15.7 g aluminum block is warmed to 53.2 deg C and plunged into an insulated beaker containing 32.5…

A: Given that,Mass of Aluminium is 15.7 gMass of water is 32.5 gInitial temperature of Aluminium is…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 623.0g sample…

A: • The values provided in the question are:-  i) Mass of a sample of a pure substance, m = 623.0 g…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.99 kg sample…

A: Given-> Weight of sample = 0.99 Kg = 0.99×1000 gm…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 697.0 mg sample…

A: We will calculate specific heat. Mass= 697mg=0.697g

Q: What is the change in internal energy in joules when a system releases 154 J of heat and does 125 J…

A:

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 161.0 g sample…

A: A chemist carefully measures the amount of heat needed to raise the temperature of a 161.0 g sample…

Q: The gas in a piston (defined as the system) warms and absorbs 655 J of heat. The expansion performs…

A: The total heat of a system remains conserved. The system takes the heat and does the work, this…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 823.0g sample…

A: Given;

Q: 900 J of heat are added to a system and 200 J of work are done on the system. What is ∆E?

A: For this problem We have to find the change in internal energy for the given condition.

Q: Q1:- Find the external work done by the system in kcal, when 10 kcal of heat is supplied to the…

A: Given: The amount of heat supplied to the system = 10 kcal The increase in internal energy = 3200 J…

Q: Initial Temperature of Metal 200.0 C Specific Heat of Metal Mass of Water 250.0 grams Initial…

A: The temperature of water increases from20oC to 24.08oC,  so the water absorbs heat. That heat comes…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.79 kg sample…

A: Answer is given below

Q: In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a…

A: Here, we need to calculate the value of specific heat of tin. Specific heat formula is used to…

Q: A hot lump of 33.8 g of iron at an initial temperature of 51.8 C is placed in 50.0 mL H,0 initially…

A:

Q: The air in an inflated balloon (defined as the system) is warmed over a toaster and absorbs 110 J of…

A: Given that : Heat absorbed by the balloon = 110 J Work done by the balloon = 79 kJ We have to…

Q: The air in an inflated balloon (the system) absorbs 115 J of heat. As it expands, it does 88 kJ of…

A:

Q: A block of aluminum weighing 140 g is cooled from 98.4°C to 62.2°C with the release of 1080 joules…

A: Recall the following relation according to law of calorimetry amount of heat…

Q: The air in an inflated balloon (defined as the system) warms over a toaster and absorbs 115 J of…

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

Q: How much heat is required to raise the temperature of 15 x 10g of water from 45F to 130F? The…

A: Answer: This question is based on the following formula: Q=mS∆There:Q=heat exchangedm=mass of the…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.37kg sample…

A: Mass of the sample is 0.37 kg and the temperature is raised from – 1.2 oC to 14.5 oC. The heat…

Q: 1. How much heat must your body transfer to 500.0g of water to heat it from 25.0°C to body…

A:

Q: An electric range burner weighing 619.0 grams is turned off after reaching a temperature of 499.9°C,…

A:

Q: If a system does 80.0 kJ of work on its surroundings and releases 105 kJ of heat, what is the change…

A:

Q: A heat pump is an electrical device that heats a building by pumping heat in from the cold outside.…

A:

Q: A heat pump is an electrical device that heats a building by pumping heat in from the cold outside.…

A: A heat pump is a device that transports heat from source to a thermal reservoir. It transfers heat…

Q: The internal energy of a system increased by 982 J when it absorbed 492 J of heat. Was work done by…

A: When a system absorbs energy it means work done on the system, We know that, ∆U=982 Jq=492 J…

Q: An object that has a mass of 75 g is heated from 50°C to 93°C. If it takes 3000 J for the…

A: Given: Mass of object = 75 g Initial temperature = 50°C Final temperature = 93°C Heat required =…