When 11.9 g of barium bromide (BaBr2) is dissolved in 107 g of water in a styrofoam calorimeter of negligible heat capacity, the temperature increases from 25.00 to 27.18 °C. Based on this observation, calculate q for the water and ΔH° for the process, assuming that the heat absorbed by the salt is negligible.BaBr2  (s) -------= Ba2+ (aq) + 2Br-(aq)

Q: In a constant‑pressure calorimeter, 65.0 mL of 0.350 M Ba(OH)2 was added to 65.0 mL of 0.700 M HCl.…

A: Given:65.0 mL of 0.350 M Ba(OH)265.0 mL of 0.700 M HCl.Ba(OH)2 + 2 HCl → BaCl2 + 2 H2O

Q: 18) The combustion of titanium with oxygen produces titanium dioxide. Ti (s) + O₂ (g) → TiO₂ (s)…

A:

Q: Mothballs are composed primarily of the hydrocarbon naphthalene (C10H8). When 1.025 g of naphthalene…

A: Given data,Mass of naphthalene=1.025gInitial temperature=24.25oCFinal…

Q: A chemist measures the enthalpy change AH during the following reaction: H,O(1)→H,O(9) AH=44. kJ Use…

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Q: What is the ΔHsoln for KF?

A:

Q: Baking soda decomposes on heating as follows, creating the holes in baked bread:…

A: The decomposition reaction of baking soda is shown below.

Q: When 50.0 mL of 0.987 M H2SO4 is added to 25.0 mL of 2.00 M NaOH at 25.0 °C in a calorimeter, the…

A:

Q: When a 4.50-g sample of liquid octane (C8H18) burns in a bomb calorimeter, the temperature of the…

A: Mass of octane = 4.50 g  Temperature change = 27.5 ∘C Heat capacity of calorimeter = 6.27 kJ/∘C

Q: Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics…

A: ΔHcomb =   Ccalorimeter ΔT nNote :  this formula is used in order to maintain the consistency of the…

Q: Calculate the change in internal energy (ΔE) for a system that is giving off 25.0 kJ of heat and is…

A: Heat given Q = 25.0 kJ  Initial volume Vi = 12.00 L  Final volume Vf = 6.00 L Constant pressure P =…

Q: Hydrogen cyanide is a highly poisonous, volatile liquid. Determine the ΔH for the reaction that…

A: Hess's Law of Constant Heat Summation: If a reaction occurs in multiple stages or steps, the total…

Q: 50.0 mL of 1.00 M HCl(aq) and 100.0 mL of 1.00 M NaOH(aq), both at 25.0oC, are added together in a…

A: Total volume of the solution, (V) = (50 + 100) mL = 150 mL. The density of the solution, d = 1 g/mL.…

Q: Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics…

A: heat of combustion is the heat released during combustion process

Q: hthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics…

A:

Q: Consider the solution process for NH4NO3(s): NH4NO3(s)  →  NH4+(aq)  +  NO3-(aq) When a 4.25g…

A: Answer:- This question is answered by using the simple concept of enthalpy of solution using the…

Q: Find ΔcH for the combustion of a new type of fuel (M = 46.07 g mol-1) from the following data:The…

A: The objective of the question is to calculate the enthalpy change (ΔcH) for the combustion of a new…

Q: A 90.0 mL sample of 0.200 M NaOH is mixed with a 90.0 mL sample of 0.200 M HNO3 in a coffee cup…

A: Volume of NaOH = 90.0 mLConcentration of NaOH = 0.200 MVolume of HNO3 = 90.0 mLConcentration of HNO3…

Q: A system releases 925 J of energy to the surroundings as heat while 211 J of work was done on the…

A: Consider the given information is as follows; Q (heat releases to the surrounding) = -925 J…

Q: THERMODYNAMICS: A 1.98 g sample of acetic acid (HC2H3O2) was burned in excess oxygen in a bomb…

A: Given the mass of acetic acid (HC2H3O2) sample taken = 1.98 g Since the temperature of the…

Q: 5.00 g of potassium hydroxide (molar mass = 56.1 g/mol) dissolves in 100.0 g of water and the…

A: The question can be solved by giveb formula,  Q=m×C×dT where Q = heat energy (Joules, J),  m = mass…

Q: Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics…

A: Heat absorbed by calorimeter=Ccaloimeter(Tf-Ti)Molar mass of  dimethylphthalate (C10H10O4)=191.184…

Q: When 2.18 g of copper(II) chloride (CuCl2) is dissolved in 119 g of water in a styrofoam calorimeter…

A:

Q: Combustion of C12H22O11(s) (sucrose or "table sugar") produces CO2(g) and H2O(l). When 1.43 g of…

A:

Q: Find ΔcH for the combustion of ethanol (C2H6O) to carbon dioxide and liquid water from the following…

A:

Q: 10.00 mL of 1.00 M HCl solution i mperature rises from 22.45 °C to 23 same as that of 125 g of…

A:

Q: Use ΔH formation information provided to calculate ΔH of the reaction (in kJ) for the following:…

A: In this question, we have to find out the correct answer of given problem by the help of Enthalpy…

Q: Acetic acid (CH3CO2H), whose aqueous solutions are known as vinegar, is prepared by reaction of…

A:

Q: When 18.5 g of HgO(s) is decomposed to form Hg(l) and O2(g), 7.75 kJ of heat is absorbed at…

A: From standard sources, we get:- Molar mass of HgO = 216.59 g/mol Amount of HgO consumed = 18.5g

Q: Solid potassium fluoride is dissolved in water in a perfect calorimeter. When 10.00 grams of…

A: In this question we have to calculate ΔHº for the reaction below KF (s) ➝ K+ (aq) + F – (aq)…

Q: Nitrogen oxide (NO) has been found to be a key component in many biological processes. It also can…

A: Given that The moles of NO = 1 The heat evolved = 57.0 kJ. Mass of nitrogen oxide = 8.00 g. To find…

Q: A student dissolves 11.9 g of sodium chloride (NaCl)in 250. g of water in a well-insulated open cup.…

A: Given that: Mass of NaCl = 11.9 g Mass of water = 250 g Initial temperature (Ti) = 23°C Final…

Q: When 1.550 g of liquid hexane (C6H14) undergoes combustion in a bomb calorimeter, the temperature…

A: Heat release during combustion = heat gain by calorimeter   Heat gain by calorimeter = heat…

Q: 131 g sa a previc ousted, alpy of

A: 1) Calculate the number of moles of the fuel that is acetonitrile given. 2) Calculate the heat…