The molar heat capacity at constant pressure of carbon dioxide is 29.14 J K-1 mol-1. (a) What is the value of its molar heat capacity at constant volume? (b) Use your value to calculate the change in (i) the molar enthalpy, and (ii) the molar in ternal energy when carbon dioxide is heated from 15 °c, the temperature at which air is inhaled, to 37 °c, which is blood temperature, the temperature in your lungs.

Q: For nitrogen gas the values of Cv and Cp at 25°C are 20.8 J K−1 mol−1 and 29.1 J K−1 mol−1,…

A: Hello. Since your question has multiple questions, we will solve the first question for you. If you…

Q: A quantity of 1.992 g of methanol (CH3OH) was burned in a constant volume bomb calorimeter…

A: Te heat energy released : ∆H=c∆THere ∆H=heat of combustionc=heat of combustion=10.4kJ/°C∆T=change in…

Q: Q) When 2mol CO2 is heated at a constant pressure of 1.25 atm, its Temperature increases from 250 K…

A: Number of moles of CO2 = 2 Constant pressure = 1.25 atm  T1 = 250K  T2 = 277 K  Cp = 37.11Jk-1mol-1…

Q: The molar heat capacity of a sample of gas at constant-pressure varies with temperature according to…

A:

Q: A sample of the sugar d-ribose (C5H10O5) of mass 0.727 g was placed in a calorimeter and then…

A:

Q: Methanol can also be combusted in the presence of oxygen in order to release its energy. 5.24 g of…

A: Given mass of methanol = 5.24g  Mass of water = 3.25kg = 3250g  Initial temperature = 65°C

Q: It requires 120 J of heat to raise the temperature of 50.5 g of samarium from 275.0 K to 287.7 K.…

A: The specific heat capacity of samarium can be calculated as

Q: For the following processes, calculate the change in internal energy of the system expressed in kJ…

A: According to first law of thermodynamics     ∆U =q +w    Where ∆U is change in internal energy,…

Q: It is the change in internal energy plus the product of the constant pressure and the change in…

A:

Q: Calculate AH and AUf for the formation of silane, SiH4(g), from its elements at 298 K, if 250 cm³ of…

A: Calorimeter is a device used for measuring heat change in a chemical reaction. Constant volume…

Q: What is the reletionship between internal energy, heat capacity and enthropy?

A: The amount of energy required to increase the temperature of a substance by one degree celsius is…

Q: It is often useful to be able to anticipate, without doing a detailed calculation, whether an…

A: The standard enthalpy in terms of internal energy can be expressed as follows:

Q: The table provides molar heat capacities (Cm) of selected Molar heat capacity (Cm) of selected…

A: Given Molar heat capacity values [in J/(mol.K) units] including Magnesium To find Specific heat…

Q: Calculate the final temperature and the change in enthalpy when 765 J of energy is transferred as…

A: The solution is given below:

Q: Estimate the standard internal energy of formation of liquid methyl ethanoate, CH3COOCH3, at 298 K…

A: Interpretation: The standard internal energy of formation of liquid methyl ethanoate, CH3COOCH3, at…

Q: The standard enthalpy of combustion, A H: , of graphite is -393.51 kJ mol1. Calculate the change in…

A: Answer- Data given- standard enthalpy of combustion of graphite is -393.51 kaj mol-1. Kindly refer…

Q: What is the internal energy (in J) of 5.50 mol of an ideal monatomic gas at 201°C? J

A: Given: Monoatomic gas number of moles, n = 5.50 moles Temperature, T = 201°C = 474.15K

Q: Consider a process in which an ideal gas changes from state 1 to state 2 in such a way that its…

A: State functions: These functions depend only on the state and not on the path it underwent to reach…

Q: When 178.0 J of energy is supplied as heat to 1.90 mol of gas molecules, the temperature of the…

A: Heat = 178.0 J Moles = 1.90 mole  ∆T = 1.78 K

Q: The standard enthalpy of combustion, A H:, of graphite is -393.51 kJ mol1. Calculate the change in…

A: Given,  Standard enthalpy of combustion of graphite = ΔH0c = -393.51 KJ/mole  Calculate the standard…

Q: For a diatomic gas near room temperature, what fraction of the heat supplied is available for…

A:

Q: Calculate the standard enthalpy of formation of phenol, C 6H5OH, at 298.15 K given that, at this…

A: We are given the reaction 2C6H5OH + 15O2  →  12CO2 + 6H2O ΔFC6H5OH  = –165.0 KJ/mol ΔFH2O  =  –…

Q: For the combustion of 1.00 mol of toluene, C7H8 , at 25 °C and 1.00 bar, calculate the work that…

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Q: The heat of combustion of glucose, C6H12O6, is -673Kcal at 298k. Calculate the standard enthalpy of…

A:

Q: An instrument consisting of electric motor and a battery produced 25 kJ of work and lost 10 kJ as…

A: Since the relationship between ΔU, q and w is given as ΔU = q + w  where ΔU = change in internal…

Q: Imagine that 2.00 mol argon, confined by a moveable, fric- tionless piston in a cylinder at a…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: What is the difference between internal energy and enthalpy? Under what  conditions will they become…

A: Answer of this question :- Enthalpy :- it is the heat energy that is being absorbed or evolved…

Q: A sample of solid benzoic acid (C,H;COOH) that weighs 800 g is burned in an excess of oxygen to…

A: (a) The balanced chemical equation for the combustion of benzoic acid is as follows:

Q: During his honeymoon in Switzerland, James Joule is said to have used a thermometer to measure the…

A: The total work done is given by the expression: w= -mg∆h Here, g, acceleration of gravity = 9.81 ms…

Q: What is the change in the internal energy of the system if 69 kJ of heat energy is evolved by the…

A: From first law of thermodynamics, Heat added to system = change in internal energy + work done by…

Q: The temperature of a block of iron (Cv,m = 25.1 J K-1 mol- 1) of mass 1.4 kg fell by 65 °c as it…

A: The number of moles of iron equivalent to 1.4 kg of iron is; nFe=1.4 kg×1000 g1.0 kg×55.845…

Q: The heat of combustion of 1,4-butanediol (C4H10O2) at 298.15 K, determined in a bomb calorimeter is…

A: Given  Heat of combustion 1,4-butadiene = 43.5 KJ/g

Q: 1. a. (i) The work done to compress a gas is 85.0 J. As a result, 21.0 J of heat is given off to the…

A: Given that w = 85.0 j (it is positive because work done on gass)  q = - 21.0 j (it is negative…

Q: For the isothermal expansion of a gas into a vacuum, ∆E = 0, q = 0, and w = 0. Explain why no work…

A: For isothermal expansion, we need to provide heat to the system. Hence heat and work done  have…

Q: What is the standard enthalpy of formation of the decomposition of one mole of liquid sulfuric acid…

A: Balanced chemical equation for decomposition of Sulfuric acid: 2H2SO4(l) → 2H2O(g) + O2(g) + 2SO2(g)…

Q: Benzoic acid of mass 1.35 g is reacted with oxygen in a constant volume calorimeter to form H20(1)…

A: The calorimeter constant can be calculated as shown in the following steps

Q: (3) It takes 330 J of energy to raise the temperature of 24.6 g of benzene from 21.0°C to 28.7° C at…

A: Given: Total energy = 330 J Mass of benzene = 24.6 g Initial temperature = 21 °C Final temperature…

Q: When 0.120 g of naphthalene (C,H10) was burned in a bomb calorimeter, the temperature rose by…

A:

Q: 4. When 2.5 mol CO2 is heated at a constant pressure of 1.25 atm, its temperature increases from 250…

A:

Q: What is the change in internal energy of the system (ΔU) if 65 kJ of heat energy is evolved by the…

A: As heat energy is evolved by the system, q will be -ve q=-65 kJ As work is done on the system, w…

Q: The molar heat capacity at constant pressure for CO(g) is 6.97 cal mol-1 K-1. How much heat in cal…

A:

Q: The standard enthalpy of formation of gaseous H20 at 298 K is -241.82 kJ/mol. V heat capacities at…

A: Given reaction is                  H2 (g)  + 1/2 O2 (g)   -->  H2O (g)    molar heat capacity…

Q: An ideal gas sealed in a rigid 5.87-L cylinder, initially at pressure Pi=10.10 atm, is cooled until…

A:

Q: When 229 J of energy is supplied as heat to 3.00 mol of argon gas at constant pressure, the…

A: . Heat capacity⇒The amount of heat required to change per unit of temperature calledas heat…

Q: What is the change in (a) the molar internal energy, and (b) the molar enthalpy of a sample of argon…

A: For Ar (Monoatomic), γ = 1.667  Then Cp = γR/R-1                 =1.667× 8.314/8.314-1        Here…

Q: Give the mathematical expression of heat capacity.

A:

Q: A 0.357 mol sample of N, (g), initially at 298 K and 1.00 atm, is held at constant pressure while…

A: Given ,  Number of moles=0.357 mol Temperature=298 K Pressure= 1atm R=8.3145 Jmol K CP=7R2…

Q: A sample of the sugar d-ribose (CsH10Os) of mass 0.727 g was placed in.a constant-volume calorimeter…

A:

Q: If 54.0 g argon at 400 K is compressed isothermally and reversibly from a pressure of 1.50 to 4.00…

A: The change in energy and enthalpy has to be given, It is an isothermal process and  the work done…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.