True or False? Because a state function depends on the current equilibrium of the system, a set of reactants and products (under the same initial and final conditions) will produce the same change in enthalpy.

Q: A 40.0 g sample of an unknown metal at 99.0 °C was placed in a constant-pressure calorimeter…

A: According to thermodynamics, the heat released by the hot metal equals the heat absorbed by the…

Q: A 3.527 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of…

A: Given,  Mass of the sample = 3.527 g  Initial temperature = Ti = 24.87 0C  Final temperature = Tf =…

Q: A 3.619 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of…

A: In a calorimeter, heat absorbed by calorimeter and the heat released by the substance is equal.Heat…

Q: A 30.0 g sample of water at 280. K is mixed with 30.0 g of iron at 330 K. The final temperature of…

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Q: .If a system does 84.0 kJ of work on its surroundings and releases 105 kJ of heat against a constant…

A: Given : Work done on surrounding by system = 84.0 KJ  And heat released = 105 KJ Since heat is being…

Q: You were tasked to find the enthalpy change in the reaction of an unknown salt with water using a…

A: a.) To calculate value of change in enthalpy , we use formula : ∆H = - q  where, q = value of heat ,…

Q: A 20 g sample of dry ice (CO₂(s)) is placed in a glass flask and a stopper is tightly placed in the…

A: Given :-  Mass of CO2 = 20 g  Heat energy is transferd into the flask = q = + 350 J   change in…

Q: Define calorimetry and describe two commonly used calorimeters. In a calorimetric measurement, why…

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Q: A piece of metal of mass 18.0g at 100 degrees Celsius is placed in a calorimeter containing 50.2…

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Q: Measurements show that the energy of a mixture of gaseous reactants increases by 369. kJ during a…

A: We have to calculate the change in enthalpy and nature of reaction.

Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 391kJ during a…

A: According to the question,The enthalpy of a mixture of gaseous reactants is increased by ΔH = 391…

Q: 5.00 – mL of 0.64M HCl and 45.00 – mL 0.77M NaOH, both initially at 26.0°C, are mixed in a…

A: Given: Concentration of HCl = 0.64 M Concentration of NaOH = 0.77 M Volume of NaOH solution added =…

Q: State the law of conservation of energy. How does it relate to energy exchanges between a…

A: For an isolated system, its total energy remains constant. The energy of system will change if it…

Q: A calorimeter contains 140 g water. The calorimeter and the water inside are both at 24 °C. A piece…

A: Please find the answer attached

Q: A constant pressure calorimeter is calibrated by mixing two aqueous solutions each with a volume…

A: Answer: In this question with the help of first reaction we have to calculate calorimeter constant…

Q: In a constant-pressure calorimetry experiment, a reaction gives off 21.8 kJ of heat. The calorimeter…

A: The given data contains, heat = 21.8 kJ. mass = 150 g. Initial temperature= 23.40C.

Q: A 50.0 mL solution of 1.2 M HCl at 24.1oC is mixed with 50.0 mL of 1.3 M NaOH, also at 24.1oC, in a…

A: HCl = 50.0 mL x 1.2 M = 60 mmol = 0.060 mol NaOH = 50.0 m X 1.3 M = 65 mmol = 0.065 mol here HCl and…

Q: Provide the definition of the second law of thermodynamics. How does the second law explain why heat…

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Q: When measuring the enthalpy of combustion of a very small amount of material, would you prefer to…

A: The amount of heat that is absorbed by calorimeter is given as follows: Here, c is the heat…

Q: Under what conditions does the enthalpy change equal the heat of a process

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Q: A certain chemical reaction releases 368.kJ of heat energy per mole of reactant consumed. Suppose…

A: In case of a calorimeter we can relate the heat change of a system to the product of thenumber of…

Q: Explain the difference between heat capacity and specific heat of a substance. Heat capacity refers…

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Q: Simple Calorimetry. A piece of solid aluminum at 15.0°C is immersed in 12.3 g of nitrogen gas which…

A: Heat lost by hotter N2 gas is equal to heat absorbed by the cooler solid aluminium.

Q: What is the standard enthalpy of formation for a compound? For a pure element in its standard state?

A: Standard enthalpy of formation of a compound is equal to the change in the enthalpy during the…

Q: A certain chemical reaction releases 269. kJ of heat energy per mole of reactant consumed. Suppose…

A: Given the enthalpy of the reaction is 269. kJ/mol The required conversion factor from the enthalpy…

Q: The heat capacity of an object indicates how much energy that object can absorb for a given increase…

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