Q1a: What is the change in internal energy of a system (ΔU) if 5.42 kl of heat is absorbed by the system and 3425 J of work is done on the system (by the surroundings) for a certain process? Expess your answer in kJ 1b: A sample of oxygen gas (O₂) effuses into a vacuum 1.8 times faster than an unknown gas. What is the molecular weight of this unknown

Q: A student burns a 0.452 g sample of naphthalene, C10H8, in a bomb calorimeter. The combustion…

A: Given: Mass of naphthalene i.e C10H8 burned = 0.452 g Change in temperature of calorimeter = 2.961…

Q: Consider the compound NH4Cl, ammonium chloride, having a molar mass of 53.491 g/mol. Nicole weighs…

A: Specific heat- It is the amount of heat required to raise the temperature of 1g of substance by 10…

Q: When 15.0 mL of 3.00 M NaOH was mixed in a calorimeter with 13.0 mL of 3.00 M HCl, both initially at…

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Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H12O6) liberates 2820 kJ of heat. If 1.83 g…

A: Here heat is released by the combustion of glucose and an equal amount of heat is absorbed by the…

Q: 7) When 0.180 mole of sodium nitrate, NaNO, was dissolved in water in a constant-pressure…

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Q: You were walking along España Blvd. and you randomly picked up a piece of strange shiny rock that…

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Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.7 g…

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Q: During an isothermal compression of an ideal gas, 410 J of heat must be removed from the gas to…

A: Since 410 J of heat is removed from the gas, Hence heat transfer (q) = - 410 J Since the compression…

Q: An engineering student wants to study the heat transfer between a 50 g of heated block of iron (cFe…

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Q: 3) A system moves from state A to state B. When the system takes path 1, 500 Jof heat flow into the…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: In the laboratory a student burns a 0.565-g sample of 1-naphthoic acid (C11H8O2) in a bomb…

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Q: Calculate the change in internal energy for a system that is giving off 45.0 kJ of heat and is…

A: According to the second law of thermodynamics, change in internal energy is related to heat and work…

Q: What is the change in internal energy (in J) of a system thatreleases 675 J of thermal energy to its…

A: Thermodynamics is the branch of chemistry which deals with the study of heat and other forms of…

Q: A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat of…

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Q: A piece of metal of mass 12 g at 107 ◦C is placed in a calorimeter containing 55.7 g of water at…

A: Given : Mass of water = 55.7 g Mass of metal = 12 g Initial temperature of water = 20 oC Final…

Q: A 6.55 g sample of aniline (C,H5NH2, molar mass = 93.13 g/mol) was combusted in a bomb calorimeter.…

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Q: An engineering student wants to study the heat transfer between a 50 g of heated block of iron (cFe…

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Q: n an industrial process to produce ammonia (NH3); nitrogen, N2, reacts with hydrogen, H2, the…

A: i) Since nitrogen gas reacts with hydrogen gas to produce ammonia gas Hence the reaction will be…

Q: Enter your answer in the provided box. A 25.95−g sample of methanol at 35.6 ° C is added to a…

A: Given, Mass of methanol = 25.95g. Initial temperature of methanol = 35.60C. Mass of ethanol =…

Q: A 25.95 g sample of methanol at 35.60 °C is added to a 38.65 g sample of ethanol at 24.70 °C in a…

A: Specific heat of methanol can be calculated as follows

Q: A gas expands and does P-V work in the surroundings equal to 279 J. At the same time, it absorbs…

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Q: The combustion of benzoic acid, C7H6O2, can be used to determine the heat capacity of a bomb…

A: The heat capacity of the calorimeter-water is 3.36 KJ/°c  Below attached file showing the details…

Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.17 g…

A: Given: Heat of combustion of glucose = 2820 KJ/mol. Mass of glucose burned = 1.17 g. Initial…

Q: 1. Find the change in the internal energy when 175 J of work is done on a system that evolves 50 J…

A: Given:Heat (q) = 50 J        Work (W) = 175 J since, work is done on the system which means energy…

Q: 6. Carbon Tetrachloride, CCI4, was a very popular organic solvent until it was found to be toxic.…

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Q: What is the internal energy of the system that releases 0.18956 BTU of energy to the surroundings in…

A: Given : amount of release heat = 0.18956 BTU and W = 425 J.  To find : Internal energy of the…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.51 kg sample…

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 289.0mg sample…

A: given: mass = 289 mg = 0.289 g T2 = 40oC T1 = 22.1°C  Q = 8.75 J molar mass of C4H8O2 = 88.11 g/mol…

Q: Is the dissolving of ammonium chloride an endothermic or exothermic process?

A: From the above data we are supposed to find whether it is a endothermic or an exothermic reaction…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 192.0 g sample…

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 140.0 mg sample…

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Q: In the laboratory a student burns a 0.983-g sample of glutaric acid (C;HgO4) in a bomb calorimete…

A: Given that: Mass of glutaric acid = 0.983 gMass of water = 1170 gChange in temperature, ∆T = 26.90oC…

Q: Consider the following four cases: (i) A chemical process in which heat is absorbed, (ii) A change…

A: Given here four cases and we are asked in how many of these cases does the internal energy of the…

Q: Find the heat (in J) transferred to the water, qwater, during the process NH4Cl (s) --> NH4Cl (aq).…

A: From the above data we are supposed to calculate the value of heat trasnferred in J

Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H12O6) liberates 2820 kJ of heat. If 1.75 g…

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Q: 2) A 0.500 g sample of Trinitrotoluene (C7H$N2O6) is burned in a bomb calorimeter containing 610…

A: Given: Sample weight = 0.5 g Heat of combustion (q) = 3374 kJ/mol Weight of water = 610 g Initial…

Q: When a piece of unknown metal weighing 63.40 grams, and at a temperature of 87.80 °C, is placed in a…

A: We will use calorimetry principle

Q: When 23.6 g of calcium chloride, CaCl2, was dissolved in water in a coffee cup calorimeter, the…

A: The heat change of solution and enthalpy change of calcium chloride will be equal in magnitude.…

Q: In an experiment, a 0.3513 g sample of diphenylacetylene (C₁4H10) is burned completely in a bomb…

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Q: What is the work done by a system when it absorbs 47 J of heat and gains 12 J of energy? How much…

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

Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.76 g…

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Q: 2.82 g sample of salicylic acid, C7H6O3, is completely burned in a bomb calorimeter and a…

A: In the given question we have to calculate the heat capacity of salicylic acid by the given data.

Q: 0.1375-g sample of solid agnesium is burned in a constant-volume bomb calorimeter that has a heat…

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 2.00kg sample…

A: Given dataMass of C2H2Cl2 = 2.0kgTotal heat = 2.25x104 JTemperature difference = (16.5 - 6.3)°C

Q: A 50.75-g sample of water at 75.6°C is added to a sample of water at 24.1°C in a constant-pressure…

A: In accordance with first law of thermodynamics, energy given off by the system would be absorbed by…

Q: when 50.0 mL of 0.200 M NaOH is mixed with 50 mL of 0.200 M HCl in a coffee cup calorimeter, the…

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Q: In an experiment, a 0.4481 g sample of 2-naphthylacetic acid ( C12 H10 O2) is burned completely in a…

A: The molar heat of combustion = 5993.7736 KJ/mol

Q: Nitroglycerine combustion takes place in a bomb calorimeter that is insulated by 731.8 grams of…

A: Each chemical reaction is associated with a certain amount of energy. When the heat is liberated…