12.00 g of Compound X with molecular formula C,H10 are burned in a constant-pressure calorimeter containing 30.00 kg of water at 25 °C. The temperature of the water is observed to rise by 4.226 °C. (You may assume all the heat released by the reaction is absorbed by the water, and none by the calorimeter itself.) Calculate the standard heat of formation of Compound X at 25 °C. Be sure your answer has a unit symbol, if necessary, and round it to 3 significant digits.

Q: When 50.0 mL of 1.60 M of HCl(aq) is combined with 50.0 mL of 1.70 M of NaOH(aq) in a coffee-cup…

A: The amount of heat required to raise the temperature of the sample is given by: q = mc∆Tq is the…

Q: When 15.0 mL of 3.00 M NaOH was mixed in a calorimeter with 13.0 mL of 3.00 M HCl, both initially at…

A:

Q: Suppose you need to calibrate a calorimeter. You burn 0.763 g of a fuel with an enthalpy of…

A:

Q: If a student performs an endothermic reaction in a calorimeter, how does the calculated value of ∆H…

A: An endothermic reaction is the one that takes in energy, overall.

Q: When 15.0 mL of 3.00 M NaOH was mixed in a calorimeter with 13.0 mL of 3.00 M HCl, both initially at…

A: Given : Concentration of NaOH = 3.00 M Concentration of HCl = 3.00 M Volume of NaOH solution = 15.0.…

Q: 3.000 g of Compound X with molecular formula C4H8 are burned in a constant-pressure calorimeter…

A: When C4H8 is burned, the following chemical reaction occurs: C4H8(s)+6O2(g)→4CO2(g)+4H2O(g)…

Q: Butane, C4H10, is widely used as a fuel for disposable lighters. When one mole of butane is burned…

A:

Q: A system does 566 kJ of work and loses 216 kJ of heat to the surroundings. What is the change in…

A: From the first law of thermodynamic's... Q = ∆E + W Work done by the system = positive Heat losses…

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: A chemical reaction in a bomb calorimeter evolves 5.17 kJ of heat. If the heat capacity of the…

A: Given, the heat evolved, q = 5.17 kJ Heat capacity, c = 1.08 kJ/°C Temperature, ΔT = ? The formula…

Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

A:

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: When a 3.25 g sample of solid sodium hyrdroxide dissolves in 80.0 g of water in a coffee cup…

A:

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: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…

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: When 2.0 g of CaO is added to 50.0 mL of water at 25.0 °C in a calorimeter, the temperature of the…

A: The reaction taking place is given as, => CaO (s) + H2O (l) --------> Ca(OH)2 (aq) Given :…

Q: 3. When a student mixes 50 mL of 1.0 M HCI and 50 mL of 1.0M NaOH in a coffee- cup calorimeter, the…

A: given - 50 ml of 0.1 HCl  50 ml. of 0.1 NaOH density = 1 g/ml specific heat = s = 4.18 J/g K initial…

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

A: The formula of heat is given by: q = m×c×∆T where q is the heat c is the specific heat and ΔT is the…

Q: Which balanced chemical equation corresponds to the enthalpy of formation (ΔHfo) of formaldehyde,…

A: Enthalpy of Formation is defined as the energy change to form one mole of compounds from its…

Q: Palmitic acid (C16H32O2) is a dietary fat found in beef and butter. The caloric content of palmitic…

A: The combustion of palmitic acid is given as follows: C16H32O2 (s) + 23 O2 (g) → 16 CO2 (g) + 16 H2O…

Q: At constant volume, the heat of combustion of a particular compound is −3623.0 kJ/mol.−3623.0…

A: Calculation of no. of mol of the compound: No. of mol=given massMolar mass=1.071 g142.25…

Q: Consider the production of sulfur trioxide from sulfur dioxide and oxygen gas:  2 SO2 (g) + O2 (g)…

A: The reaction given is: 2SO2(g) + O2(g) ⟶ 2SO3(g) ∆Hrxn = −198.2 kJ/mol We can see that when 2 moles…

Q: 2. To study the possible amount of energy generated by a person, the person can be roughly viewed as…

A:

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: Under constant- volume conditions, the heat of combustion of glucose, C6H12O6, is 15.57 kJ/g. A 3.50…

A:

Q: Benzene (C6H6) burns in air to produce carbon dioxide and liquid water. How much heat is released in…

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Q: What is the change in the internal energy of the system if the surroundings releases 300J of heat…

A:

Q: A calorimeter contains 27.0 mL of water at 11.5 °C.When 1.30 g of X (a substance with a molar mass…

A: X(s) + H2O(l) --> X(aqm = 1.30 gM = 82

Q: The combustion of benzoic acid, C7H6O2, can be used to determine the heat capacity of a bomb…

A:

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…

A: Given: Mass of PCl3 dissolved = 1.38 g. Initial temperature = 25.55 oC Mass of water = 100 g. And…

Q: The combustion of benzoic acid, C7H602, can be used to determine the heat capacity of a bomb…

A: Given heat evolved per mole of benzoic acid combustion= 3.09×103kJ . WWhich means that heat evolved…

Q: Enter your answer in the provided box. A quantity of 1.922 g of methanol (CH,OH) was burned in a…

A: The heat released by the burning of the methanol is gain by the calorimeter and the temperature of…

Q: A scientist measures the standard enthalpy change for the following reaction to be -56.0 kJ:…

A: Formation enthalpy of the reactants and products (except water)  is collected from internet,since…

Q: A quantity of 2.314 g of naphthalene (MM = 128 g/mol), a pungent-smelling substance used in moth…

A: Given: Heat capacity of bomb = 5.170 KJ/oC = 5170 J/oC                             (Since 1 KJ =…

Q: 2) A 0.500 g sample of Trinitrotoluene (C7H$N2O6) is burned in a bomb calorimeter containing 610…

A: Given: Sample weight = 0.5 g Heat of combustion (q) = 3374 kJ/mol Weight of water = 610 g Initial…

Q: If a student performs an endothermic reaction in a calorimeter, how does the calculated value of ΔH…

A:

Q: When 50.0 mL of 1.00 M HCl(aq) and 50.0 mL of 1.00 M NaOH(aq), both at 22.0 °C, are added to a…

A: Volume of HCl solution      = 50 mL Volume of NaOH solution = 50 mL Molarity of HCl solution    = 1…

Q: To calibrate a calorimeter, 10.0 ml of 1.0 M NaOH and 5.0 ml of 1.0 M HCl was used in a calorimetry…

A: Calorimeter is used to calculate heat of reactions.

Q: If 330. Grams of an unknown substance at 200 oC are placed in a calorimeter filled with 2000. Grams…

A: Given information is as follows; For unknown substance (X)…

Q: 2.82 g sample of salicylic acid, C7H6O3, is completely burned in a bomb calorimeter and a…

A: In the given question we have to calculate the heat capacity of salicylic acid by the given data.

Q: Ethanol undergoes combustion in oxygen to produce carbon dioxide gas and liquid water. The standard…

A:

Q: Solid calcium chloride dissolves in water according to the equation below. CaCl2 (s) ➝ Ca+2 (aq) +…

A: CaCl2 (s) ➝ Ca+2 (aq) + 2 Cl – (aq)      ΔHº = –81.3 kJ/mol Heat evolved = heat absorbed = Q Q = m .…

Q: of 1.00 g glucose is combusted in a bomb calorimeter. If the calorimeter contains 875 g H20 and the…

A: Rise in temperature can be calculated as follows

Q: 4. 1.922 g methanol (CH3OH) was burned in a constant-volume bomb calorimeter. Consequently, the…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A quantity of 50.0 mL of 0.200 M Ba(OH)2 is mixed with 50.0 mL of 0.400 M HNO3 in a…

A: The balanced chemical equation is written as, BaOH2aq+2HNO3aq→BaNO32aq+2H2Ol The required amount of…

Q: 5.000 g of Compound X with molecular formula CçH, are burned in a constant-pressure calorimeter…

A:

Q: 0.500 g of ethanol [CH3CH2OH(l)] was burned in a bomb calorimeter. The temperature of the water rose…

A:

Q: In an experiment, a 0.4481 g sample of 2-naphthylacetic acid ( C12 H10 O2) is burned completely in a…

A: The molar heat of combustion = 5993.7736 KJ/mol