0.81 g sample of KCl is added to 37.9 g H2O and stirred until KCl completely dissolves in a 26.03.2021 Styrofoam cup. The temperature of the solution drops from 24.5 to 23.0 o C. (a) Is the process endothermic or exothermic? (b) What is the heat of solution of KCl expressed in kilojoules per mole of KCl? (Specific heat of water: 4.18 J/g o C)

Q: When a 6.00 g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of…

A: Heat of solution is directly proportional to the the temperature change.

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Q: What was the initial temperature (in oC) of a 38.13 g sample of aluminum (specific heat = 0.900 J/(g…

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A: Given : Mass of KCl dissolved = 8 g Total heat capacity of calorimeter = 6.15 KJ/K And change in…

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A: Given that : Volume of Ba(OH)2 solution = 50.0 mL Concentration of Ba(OH)2 = 0.320 M Volume of HCl…

Q: When 1 g of material X(molar mass= 40/g/mol) was dissolved in a beaker containing 50.0 ml of 1 M HCI…

A: Given  Mass of material= 1 g  Molar mass of material = 40 g/mol  Moles of material = mass of…

Q: If 41,200 J of energy is required to raise the temperature of 120.0 g of a liquid by +73.4 °C, what…

A: In this question, we will determine the specific heat of the Solution.  You can see details step by…

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Q: When a 7.00 g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of…

A:

Q: When a 4.00 g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of…

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A:

Q: When 50.0 g of 0.200 M NaCl(aq) at 24.1 °C is added to 100.0 g of 0.100 M AgNO3(aq) at 24.1 °C in a…

A: Given: The total mass of the solution (m) is calculated as follows,

Q: When 50.0 g of 0.200 M NaCl(aq) at 24.1 °C is added to 100.0 g of 0.100 M AgNO3(aq) at 24.1 °C in a…

A: Heat is given by: Q = m×c×∆T  m = mass of the soluton  c = specific heat  ∆T = Temperature change

Q: In a constant-pressure calorimeter, 50.0 mL of 0.320 M Ba(OH), was added to 50.0 mL of 0.640 M HCI.…

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Q: The specific heat of octane, C8H181l2, is 2.22 J>g@K. (a) Howmany J of heat are needed to raise…

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Q: 7. When 0.63 g of solid LiCI (AHsoln = – 37.1 kJ/mol) dissolves in 5 L of water, how much heat is…

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Q: During an experiment, a student adds 1.23 g Ca0 to 200.0 mL of 0.500 M HCI. The student observes a…

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Q: The enthalpy for the formation of 1 mole of NH3(aq)NH3(aq) is -80.29 kJ/molkJ/mol. What is the…

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