Question 2 : 1st Law of Thermodynamics (a) When 178 J of energy is supplied as heat to 1.9 mol of gas molecules at constant pressure, the temperature of the sample increases by 1.78 K. Calculate the molar heat capacities at constant pressure and constant volume of the gas.

Q: Q/ Calculate the total energy and specific heat with constant volume, at room temperature, for one…

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A: Enthalpy of reaction is equal to the difference in enthalpy of product and reactant. Enthalpy of…

Q: Enter your answer in the provided box. A sheet of gold weighing 11.4 g and at a temperature of…

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Q: If you have 7 moles of a diatomic ideal gas (such as oxygen or nitrogen), how much heat is required…

A: Given data  The number of moles of a diatomic ideal gas (such as oxygen or nitrogen),  n =  7 moles…

Q: Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 36…

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Q: Enter your answer in the provided box. A 34.51-g stainless steel ball bearing at l15.81°C is placed…

A: Answer:- This question is answered by using the simple concept of calorimetry which states that heat…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.24 kg sample…

A: Given: Mass of sample : 0.24 kg Initial temperature = 33.8oC Final temperature = 43.9oC Heat needed…

Q: When 0.0551 mol of an unknown hydrocarbon is burned in a bomb calorimeter, the calorimeter increases…

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Q: A 0.500-g sample of n-heptane(ℓ) burned in a constant volume calorimeter  to CO2(g) and H2O(ℓ)…

A: Given: Mass of heptane combusted = 0.500 g. Change in temperature of calorimeter = 2.934 oC And the…

Q: A 140.0-g sample of water at 25.0°C is mixed with 111.7 g of a certain metal at 100.0°C. After…

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

Q: 926 kJ of thermal energy are removed from a sample of gas causing the gas to contract. As the gas…

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Q: 164. The specific heat capacity c of a metal is approximately related to its molar mass M follows:…

A: The specific heat capacity of a metal is related to its molar mass as follows,

Q: Chaeyoung wants to study the heat transfer between a 50 g of heated block of iron (cFe = 0.449 J/g…

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Q: Acetylene, C2H2, is a gas used in welding. The molar enthalpy of combustion for acetylene is –2599…

A: Given, Molar enthalpy of combustion = - 2599 kJ Mass of C2H2(g) = 0.338 g Heat Capacity = 5.54 kJ/°C…

Q: 10. What would be the final temperature if 55.0g of H2O at 30°C is added to 45.0g of H20 at…

A: The amount of energy going out of the warm water is equal to the amount of energy of the cool water.

Q: What is the molar heat capacity of water?

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

Q: Consider the combustion of cyclopentane, C5H10 C5H10(1) + 15/2 O2(g) → 5 CO2(g) + 5 H20(1) What mass…

A: heat released Q = 1000.0 kJ  heat of formation of reaction = - 3292 kJ/mol  What is the mass of…

Q: An air conditioner (AC) is a cooling device in which the inside of the house can act as the cold…

A: Work = power x time  = (1.7 x 103 W) x (24 hour) =(1.7 x 103 W) x (24x60x60 seconds) = 1.47 x 108 J…

Q: Consider the combustion of butane: 2C4​H10​(g)+13O2​(g)-->8CO2​(g)+10H2​O(l), ΔHrxn = −2878 kJ/mol…

A: For the combustion of butane: 2C4​H10​(g)+13O2​(g)-->8CO2​(g)+10H2​O(l), ΔHrxn = −2878 kJ/mol…

Q: 2. In a steam engine, steam in a cylinder expands against a piston exerting 10.00 atm of external…

A: The change in energy of the steam is calculated in step 2

Q: One mole nitrogen oxide, NO, reacts with oxygen gas to produce a brown gas, NO2. a. How many moles…

A: The standard enthalpy of reaction (∆Hr) is calculated as the difference of the sum of enthalpies of…

Q: When ammonia reacts with dinitrogen oxide gas (ΔHf° = 82.05 kJ/mol), liquid water and nitrogen gas…

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Q: As a system in volume, it absorbs 52.5 J of energy in the form of heat from the surroundings. The…

A: The internal energy of the system can be modified by doing work on them or by adding heat to the…

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: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.69 kg sample…

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Q: Enter your answer in the provided box. A 25.95−g sample of methanol at 35.6 ° C is added to a…

A: Given, Mass of methanol = 25.95g. Initial temperature of methanol = 35.60C. Mass of ethanol =…

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: Im having trouble finding J*mol^-1*K^-1.

A: The given temperature in Kelvin scale can be written as follows,-9oC = 264.15 K11.3oC = 284.45…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.51 kg sample…

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Q: As a system increases in volume, it absorbs 52.0 J of energy in the form of heat from the…

A: Work done (w) can be calculated as follows, 1 L atm = 101.3 J

Q: Why are cold, damp air and hot, humid air more uncomfortable than dry air at the same temperatures?…

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Q: Given the reaction below, write the thermochemical equation showing the enthalpy of the…

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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: Fonsi Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume…

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Q: 6. Why can there never be a temperature less than 0 Kelvins? 7. How much heat is absorbed from a…

A: Given data,Mass of mercury=56.0g∆T=289K=289-273=16oCSpecific heat capacity of Hg=0.14J/goC

Q: Determine the amount of heat (in kl) given off when 1.26 x 10'g of NO, ( Molar mass» 46 g/mole) are…

A: The reaction given is 2 NO (g) + O2 (g) ------> 2 NO2 (g)                                  ΔH =…

Q: The total volume of hydrogen gas needed to fill the Hindenburg was 2.0 x 108 L at 1.0 atm and 25°C.…

A: Given, The balanced chemical equation, H2(g) + O2(g) ---> 2H2O P = 1.0 atm V = 2.0 x 108 L T =…

Q: Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 40.…

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Q: solve for the enthalpy of the following: 1. A car performs 6000 joules of work on its surroundings…

A: From the First law of thermodynamics,ΔU = q - w where q is the heat added to the system and w is the…

Q: The molar heat of combustion of a compound is 1,350 kJ/mol.  If 0.875 moles of this compound was…

A: Bomb calorimeters are useful in measuring reaction's enthalpy by burning specific amount of that…

Q: the heat capacity at constant pressure for one mole of ideal gas . has linear three atoms molecules…

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Q: Calculate the final temperature of the water. Given a 32.4-g stainless steel ball bearing at…

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Q: A student wishes to determine the enthalpy of the reaction of hydrogen gas with chlorine gas by the…

A: Volume of the gas = 500mL or 0.500L Pressure = 10atm Temperature = 293.50K Using ideal gas law,  PV…

Q: Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 36…

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Q: Consider the first three written formulas, and then use Hess’ law to find the change in enthalpy ,…

A: Hess's law is also known as Hess's law of constant heat summation. It states that when reactants are…

Q: A 50.75-g sample of water at 75.6°C is added to a sample of water at 24.1°C in a constant-pressure…

A: In accordance with first law of thermodynamics, energy given off by the system would be absorbed by…

Q: Cyclopentane, C5H10, has an enthalpy of combustion of –3292 kJ per mole of cyclopentane.  What mass…

A: Given: Enthalpy of combustion of cyclopentane ∆Hc is -3292 kJ/mol. The amount of heat released is…