n a coffee cup calorimeter 2.5 grams of NaOH is added 50.00 gram of water.  The water was at 22.0oC.  The solution is stirred and mixed and the temperature of the resulting solution increases to 55.0oC.  Calculate the Q, Hrxn and the ΔHrxn kJ per mole of NaOH.  The specific heat of the solution is 4.18J/goC.

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Q: A 30.5-g sample of an alloy at 93.0oC is placed into 50.0 g of water at 22.0oC in an insulated…

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Q: A 25.0 mL sample of 0.5 M AgNO3(aq) is mixed with a 25.0 mL sample of 0.5 M NaCl(aq) in a…

A: Enthalpy of reaction ∆Hrxn is calculated below.

Q: When 50.0 mL of 1.27 M of HCI(aq) is combined with 50.0 mL of 1.32 M of NaOH(aq) in a coffee-cup…

A: As temperature of the solution increases, thus heat is generated during this process.  Thus enthalpy…

Q: A 25.0 mL sample of 0.5 M AgNO3(aq) is mixed with a 25.0 mL sample of 0.5 M NaCl(aq) in a…

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Q: When a student mixes 50 mL of 1.0 M HCl and 50 mL of 1.0 M NaOH in a coffee-cup calorimeter, the…

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Q: Calcium metal reacts with acid in solution according to the following reaction: Ca(s) + 2H†(aq) →…

A: Given: Mass of Ca reacting = 0.1437 g. Mass of solution = 150.0 g. Initial temperature = 21.80 oC…

Q: 2. a quantity of 1.435 g of naphthalene (C10H8), a pungent-smelling substance used in moth…

A: Given , mass of napthalene = 1.435 g Change in temperature, ∆T = (25.84 - 20.17)°C=5.67°C Mass of…

Q: umts OI KJ/IIOI. Consider the dissolution of CaCl2: CaCl,(s) → Ca²*(aq) + 2CI¯(aq) AH = -81,5 kJ An…

A: The heat capacity is the ratio of the energy supplied in the form of heat to the rise in the…

Q: oxygen in a bomb calorimeter. The calorimeter, which alone had a heat capacity of 2.67 kJ/oC,…

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Q: A 5.000 g sample of methanol, CH;OH (Molar mass = 32 g/mol), was combusted in the presence of excess…

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Q: A 1.66 g sample of acetic acid (HC2H3O2) was burned in excess oxygen in a bomb calorimeter. The…

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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…

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Q: A 2.885 g sample of methanol, CH3OH, is combusted in a bomb calorimeter. The temperature of the…

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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…

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Q: A 50.0-g sample of a copper-zinc alloy is heated to 100.0oC. The hot metal is quickly added to 100.0…

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Q: In a constant-volume calorimeter containing 1500.0 mL of water, a 143.9-gram piece of iron (Fe) rod…

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Q: 1.87 g sample of acetic acid (HC2H3O2) was burned in excess oxygen in a bomb calorimeter. The…

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Q: The heat of neutralization between an acid and a base was detemined using a coffee cup calorimeter…

A:

Q: A 5.006 g sample of methanol, CH3OH, was combusted in the presence of excess oxygen in a bomb…

A: Since the question number is not mentioned, we will answer both the questions.

Q: In an experiment, 30.0 g of metal was heated to 98.0°C and then quickly transferred to 50.0 g of…

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Q: 3. When 1.38 g of liquid PCl; at 25.55 "C is added to 1.00 x 10g of water at 25.55 "C in a…

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Q: Coffee cup calorimetry experiments can be used to obtain DHfo for magnesium oxide. To determine the…

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Q: When 1.81 g of zinc metal reacts with 100.00 g of 1.00 M HCl in a coffee-cup calorimeter, the…

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Q: periment, a 1.0150 g sample of L-asorbic acid is burned completely in a bomb calorimeter. The…

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Q: A 2.673 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of…

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Q: When 60.0 mL of a 0.400 M solution of HNO3 (aq) is combined with 60.0 mL of a 0.400 M solution of…

A: Given density of solution is 1.04 g/mL and given specific heat capacity of the solution is 3.90…

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Q: When 2.060 g of titanium is combusted in a bomb calorimeter, the temperature of the calorimeter…

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Q: The enthalpy of solution (∆H) of KOH is -57.6 kJ/mol. If 5.61 g KOH is dissolved in enough water to…

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