NH4NO3 + H2O -> NH4NO DeltaH = +25.7kJ What is the final temperature in an activated cold pack that contains 50.0g of NH4NO3 dissolved in 125mL of water? Assume a specific heat of 4.184J/g.C for the solution, an initial temperature of 25.0C and no heat transfer between the cold pack and the environment.

Q: A newly made Styrofoam ball calorimeter was first calibrated by mixing 10.0 mL of 0.40 M…

A: Given: Volume of HCl = 10.0 mL Concentration of HCl = 0.40 M mass of MgO = 0.1008 g MgO (MW = 40.30…

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Q: A student performed this experiment by mixing 50.0 mL of 2.0 M NaOH solution with 50.0 mL of 2.0  M…

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A: Specific heat of the solution = 4.18 J/g. oC Temperature change = ∆T = 25.50 °C - 23.40 °C = 2.1 °C…

Q: In a constant-pressure calorimeter, 55.0 mL of 0.300 M Ba(OH)₂ was added to 55.0 mL of 0.600 M HCl.…

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Q: Payal

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Q: A newly made Styrofoam ball calorimeter was first calibrated by mixing 10.0 mL of 0.40 M…

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A: Given, Moles of an unknown solid = 0.700 mol. Volume of the solution = 150.0 mL. The density of the…

Q: 10. The enthalpy change for the reaction: H+(aq) + OH-(aq) → H2O (l) ΔHorxn =-57.6 kJ/mol. If 161.4…

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Q: When 50.0 g of an aqueous solution of reagent 1 at 24.1oC is added to 100.0 g of of an aqueous…

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Q: Calculate AHryn in kJ/mol of NaOH, when 100 mL of 1.250 M NaOH is mixed with 100 mL of 1.000 M of…

A: Answer is explained below.

Q: In a constant-pressure calorimeter, 65.0 ml. of 0,860 M H, SO, was added to 65.0 ml. of 0.420M NAOH.…

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Q: 25.0 mL of 1.00 M HCl at 23.5oC react with 25.0 mL 1.00 M NaOH in a styrofoam calorimeter whose…

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Q: A student performed this experiment by mixing 50.0 mL of 2.0 M NaOH solution with 50.0 mL of 2.0 M…

A: Since the moles of acid reacting = molarity of acid X volume of acid solution in L = 2 X 50 / 1000 =…

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Q: The density of all solutions are 1.0g/mL and their respective heat capacities 4.184J/g.K.…

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Q: what formula will I have to use? HCI (aq) + NaOH (aq) → NaCl (aq) + H2O (1) AH = -57.5kJ What is the…

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Q: 26 The standard enthalpy change for the following reaction is 6492.0 kJ/molpxn: What mass (in g) of…

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Q: 25.0 mL of 1.00 M HCl at 24.3°C react with 25.0 mL 1.00 M NAOH in a styrofoam calorimeter whose…

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Q: A student performed this experiment by mixing 50.0 mL of 2.0 M NaOH solution with 50.0 mL of 2.0 M…

A: The volume of solution = volume of acid + volume of base = 50 + 50 = 100 mL hence the mass of the…

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

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Q: . The enthalpy change for the reaction: H+(aq) + OH-(aq) → H2O (l) ΔH rxn =-57.6 kJ/mol. If 161.4 mL…

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