Suppose that the molar enthalpy of a reaction is -1.01 kJ/mol and 4.955 moles are reacted. How many kilojoules of heat are released by the reaction? Report your answer to three decimal places (ignore significant figures).

Q: Suppose that the molar enthalpy of a reaction is -73.45 kJ/mol and 4.222 moles are reacted. How many…

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Q: What is the specific heat of a 66.51 g piece of an unknown metal that exhibits a 45.2°C temperature…

A: The relation between specific heat and heat energy is given by q = m * C * ΔT Where q = heat energy…

Q: If a system has 42.0 J of heat added to it, and the system does 25.0 J of work on its surroundings,…

A: According to the first law of thermodynamics, the provided heat is used in increasing the the…

Q: A certain chemical reaction releases 111.kJ of heat energy per mole of reactant consumed. Suppose…

A: Heat capacity of calorimeter: Ccal = 4.45 J / 1oC = 4.45 J/oC   Heat of calorimeter: q cal  = C cal…

Q: 1. A 32.07 gram sample of vanadium was heated to 75 deg. It was then dumped in which the initial…

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Q: How many grams of iron (III) oxide will be produced if 4300 kJ of heat energy is released?   (Hint:…

A: Given a reaction 4 Fe+ 3 O2 → 2 Fe2O3.        ∆H = – 1652 kJ We have to calculate the amount of iron…

Q: An ideal gas in a cylinder fitted with a piston expands at constant temperature from a pressure of 5…

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

Q: The specific heat of a substance is the amount of heat required to raise the temperature of one gram…

A: Given --> Q = 357 J  S = 0.362 J/g°C T1 = 24.1°C T2 = 80.6°C

Q: A chemical reaction in a bomb calorimeter evolves 5.17 kJ of heat. If the heat capacity of the…

A: Given, the heat evolved, q = 5.17 kJ Heat capacity, c = 1.08 kJ/°C Temperature, ΔT = ? The formula…

Q: 5. Calculate the approximate final temperature of water in a coffee cup calorimeter if 33.9 kJ of…

A: Use calorimetry principle to get answer Heat flow from high temperature to low temperature. Heat=…

Q: What is the specific heat of a 83.01 g piece of an unknown metal that exhibits a 45.2°C temperature…

A: The amount of heat absorbed or released is related to specific heat capacity as,…

Q: Hydrogen gas reacts with oxygen to form water: 2 H2(g) + O2(g) → 2 H;O(g) AH = -483.5 kJ Determine…

A: Let y grams of hydrogen gas is required. By stoichiometry of reaction : 4 g of hydrogen gas will…

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

A: The total energy required to charge a cell phone is equal to the energy a cell phone battery needs…

Q: A metal object with mass of 29.0 g is heated to 97.0 °C and then transferred to an insulated…

A: Since the heat lost by metal + heat gain by water should be = 0 as no heat is lost in surroundings…

Q: What is the specific heat of a 76.01 g piece of an unknown metal that exhibits a 45.2°C temperature…

A: Consider the given information is as follows; Mass of unknown metal = 76.01 g Temperature change…

Q: The fuel value of natural gas is 54.0 kJ/g how much heat results from the combustion of 2.84 kg of…

A: The fuel value of natural gas is given in kJ/g unit. So first convert the given mass of natural gas…

Q: A 29.8 g sample of water at 4.7 C is mixed with 52.5 g of water at 74.8 C. Calculate the final…

A: Given data,Mass of water(1)=29.8gTemperature(T1)=4.7oCMass of…

Q: a system does 72.0 kJ of work on its surroundings and releases 105 kJ of heat, what is the change in…

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Q: Calculate the amount of coke, (carbon) needed to be burned in order to heat 500.kg of water from 20…

A: The amount of energy for a particular amount of matter present at specific temperature with specific…

Q: A 55.2 g piece of metal has a temperature of 90.4 °C before being placed into 102.5 g of water at…

A: Given details, For metal, Mass (m) = 55.2 g T1 = 90.4°CT2 = 24.7°C ∆T=(T2-T1)=65.7°C For water, Mass…

Q: The reaction 3H2(g) + N2(g) → 2NH3(g) has an enthalpy of reaction of -92.6 kJ/mol. If 2 g of…

A: Nitrogen reacts with hydrogen to form ammonia. The equation for the balanced chemical reaction is…

Q: What is the specific heat of a 72.01 g piece of an unknown metal that exhibits a 45.2°C temperature…

A: Given data is  mass of sample = 72.01 g Temperature = 45.2 oC Heat absorbed = 1870 J Formula used…

Q: 1. In an experiment to determine the Specific Heat of Nickel, a 66.0 g sample of Nickel metal is…

A: Answer :-  The specific heat of Nickel determined by the experiment = 0.544 J/g.°C…

Q: In a calorimetric analysis, 2.42 g of potassium chloride is weighed. The heat of solution of this…

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Q: Iron reacts with oxygen to form one mole iron (III) oxide releasing 826 kJ of heat. How much heat is…

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Q: 7. 200g of copper is placed in an oven. The hot metal is removed from the oven and quickly added to…

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Q: Camphor has a heat of combustion of -5903.6 kJ/mol. A 0.7610 g sample of camphor was burned in a…

A: Molar mass of camphor = 152.23 gm/mol Moles of camphor = Weight /molar mass…

Q: When immersed in water, the temperature of a 102.1 gram sample of metal changes from 150.2 0C to…

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Q: Hydrogen sulfide is produced during the decomposition of organic matter. When 0.5380 mol H2S burns…

A: Given: H2S burns to produce SO2(g) and H2O(g) with heat release of -278.7 kJ

Q: When you mix two substances, the heat gained by one substance is equal to the heat lost by the other…

A: According to the specific heat equation : q = m. C. ∆ T Where  q = heat absorbed or released m =…

Q: The heat of combustion (AH) for propane (molar mass 44.11 g/mol) is -2222 kJ/mol. The heat generated…

A: First we would calculate the heat generated by combustion of given mass of propane.  Then we would…

Q: If a system does 84.0 kJ of work on its surroundings and releases 105 kJ of heat, what is the change…

A: From first Law of Thermodynamics , the total change in internal energy of the system can be…

Q: When a metal at a higher temperature is transferred to water at a lower temperature, heat the value…

A: Heat flows from hot object to cold object until they reach at same temperature. A calorimeter is…

Q: A gas is compressed and during this process the surroundings do 59.5 J of work on the gas. At the…

A: The objective of the question is to calculate the change in the internal energy of the gas. The…

Q: Suppose that the molar enthalpy of a reaction is 56.94 kJ/mol and 16.89 kJ of heat are absorbed by…

A: The amount of heat required to raise the temperature of the sample is given by: q = mc∆T 'q' is the…

Q: A 6.61g sample of an unknown salt (MM=116.82g//mol) is dissolved in 150.00g water in a coffee cup…

A: Answer:Calorimetry is the easiest way to calculate the amount of heat transferred to a substance or…

Q: A 29.00 g sample of metal alloy is heated to 92.6 °C; then placed in 55.23 g of water in an…

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Q: In an experiment, 26.5 g of metal was heated to 98.0°C and then quickly transferred to 150.0 g of…

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