Why is it important to distinguish between the standardstate and the reference state of an element?

Q: The specific heat capacities of Li(s), Na(s), K(s), Rb(s),and Cs(s) at 25°C are 3.57, 1.23, 0.756,…

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Q: Calculate the theoretical value of C_p (constant pressure heat capacity)/ C_v (constant volume heat…

A: The molar specific heat capacity of a gas at constant volume (Cv) is the amount of heat required to…

Q: For the calculation of latent heat of fusion, asys = dice + 9H2O- O True False

A: Given : We have to tell whether the statement is true or false.

Q: dU = Cv dT + PT dV where Cv is the constant volume heat capacity and PT is the internal pressure.…

A: In thermodynamics, various functions are involved. They are derived from other functions using…

Q: Why does the isobaric molar heat capacity of most substances increase abruptly when that substance…

A: Molar heat capacity is defined as the quantity of heat absorbed by 1 mol of substance to raise the…

Q: The ground level of Cl is 2P3/2 and a 2P1/2 level lies 881 cm−1 above it. Calculate the electronic…

A: Step 1: The ground level of Cl is 2P3/2 and it lies at 881 cm-1 below another level 2P1/2. The molar…

Q: Determine the difference between the molar heat capacity of iron at constant pressure and that at…

A: The energy required to enhance the temperature by 1 Kelvin (for 1 mole of a substance) is termed as…

Q: The constant pressure molar heat capacity of argon is 20.79 JK-1 mol -1 at 298 K. Predict the value…

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Q: Calculate the vibrational, rotational, and translational contributions to the constant volume heat…

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Q: What is the magnitude of the uncertainty introduced by the lack of knowledge of the specific heat…

A: The gas law for calculating ΔH from ΔE is, ΔH = ΔE + ΔngasRT The order of magnitude of the error in…

Q: 4. The molar heat capacity (Cp (T)) for N2 is given by, P,m C (T)=(27.0+5.9×10³T-0.34×10ʻT² )J mol"…

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Q: Calculate the molar entropy of an ensemble by S=U/T+klnQ with 1.32 mole of Kr(g) at 47degree and a…

A: The heat capacity at constant volume for monoatomic gas like Kr (g) is 12.5 JK-1mol-1. The internal…

Q: Two moles of a perfect gas expand isothermally and reversibly from 800 cm3 to 300 dm3 at 310 K. (a)…

A: Work done in a reversible isothermal process is the increase in volume at constant temperature and…

Q: The constant-pressure heat capacity of a sample of a perfect gas was found.to vary with temperature…

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Q: Introduce the relation of enthalpy, internal energy and pressure-volume work with the chemical…

A: The relation between the enthalpy,  internal energy and pressure-volume work.  Symbols for these…

Q: EX/ A sample of argon (molar mass 39.9 gmol) of mass 6.56 g occupies 18.5 dm' at 305 K. (a)…

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Q: The molar heat capacity of white tin (Sn(white)) varies with temperature as follows: T/K 20 30 40…

A: The change in free energy (ΔG) for the grey/white tin transformation at 298 K is calculated as shown…

Q: 2-The work done by a constant force F=-Si +4j (N) acting on a particle that undergoes a displacement…

A: Answer c) 7 J

Q: Calculate the work done by a gas when it expands through (a) 1.0 cm3, (b) 1.0 dm3 against an…

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Q: In Thermochemistry, distinguish between “standard state” and “reference state”,…

A: Answer - According to the question - Standard State -  It is the thermodynamically most stable…

Q: 1. Consider the following diatomic molecules: H2 with a vibrational stretch mode at 4342 cm-1, Frat…

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Q: The value of the heat capacity at constant volume, CV,,m, for a gas sample was found to vary with…

A: Given Cv = 11.86 + 0.3665 T  No. of moles = 1 Initial temp. = 25° C = 298 K Final temp. = 200°C =…

Q: The work done by an isothermal reversible expanding of 1 mol of an ideal gas from a volume of 20 L…

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Q: A sample of a serum of mass 25 g is cooled from 290 K to 275 K at constant pressure by the…

A: Given- Mass of sample = 25g  Initial temperature = 290 K Final temperature = 275 K Heat = 1.2 kJ…

Q: Please please please show all the work Alive the neutralization prom lens below using the equation…

A: In this question, we want to Calculate the Concentration of acid / base by using equation ( MaVa ) =…

Q: Calculate the molar heat capacity of C,H14•

A: Given :-  Heat absorbed (q) = 1697 J  Mass of hexane (m) = 39.9 g  Change in temperature (∆T) = 18.8…

Q: Briefly describe the contributions of Walter Nernst, T. W Richards, Max Plank and G. N Lewis in the…

A: Walter Nernst (1864 – 1941) made a significant breakthrough with his statement of the Third Law of…

Q: Use the equipartition theorem to estimate the constant- volume molar heat capacity of (i) O3, (ii)…

A: The equipartition theorem guides the contribution of the degree of freedom of a molecule to the…

Q: 1.3 The ground level of Cl is 2P3/2 and a 2P1/2 level lies 881 cm-1 there above. Calculate the…

A: Given as A ground level of Cl is 2P3/2 and 2P1/2 level lies = 881 cm-1 above The Heat capacity of Cl…

Q: The molar constant pressure heat capacity of an ideal diatomic gas is R. Calculate Cy for 6.10 mol…

A: Heat capacity is defined as the amount of heat needed for a substance to increase the temperature by…

Q: Taking into account that dH = TdS + Vdp,what is true about temperature? A) T = (p/S)VB) T =…

A: Given:

Q: The energy levels of a CH3-group attached to a larger fragment are given by the expression for a…

A: 1. Solution -

Q: Calculate the molar internal energy of a monatomic gas.

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Q: What is the energy of one mole of photons having a wavelength of 550 nm and also find 2.045 g of a…

A: Given data Wavelength of photon =550 nm And for Combustion of C9H8O2  mass = 2.045 g Initial…

Q: A sample of biphenyl (C12H10) weighing 0.526 g was ignited in a bomb calorimeter initially at 25°C,…

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Q: Calculate the work of expansion accompanying the complete combustion of 10.0 g of sucrose…

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Q: system = -1834.3J, with a mZn = 34.8g (cZn = 0.390J/goC), What is the ∆T given the heat loss?

A: The q of system is -1834.3 J. The mass of zinc is 34.8 g. The c of zinc is 0.390 J/g ˚C.

Q: P2.15 Assume that a system has a very large number of energy levels given by the formula EL = €ol?…

A: Given, ξl=ξ0l2where,ξ0=1.25×10-22J Degeneracy level , gi=2l

Q: 1. Find the coefficient of linear expansion of a 2.0 meter long object with a temperature of 30…

A: The term "expansion" refers to a transition or rise in duration. The change of length along one…

Q: Calculate the internal energy change for a system that gains 1.75KJ of sheet to the surrounding and…

A: According to first law of thermodynamics The change in internal energy , heat and work done are…

Q: The heat capacity ratio of a gas determines the speed of sound in it through the formula cs =…

A: To find the speed of the sound   Cs = (γRT/M)1/2 to find γ   γ = Cp,m/Cv,m At given temperature, T=…

Q: At 4.2 K the heat capacity of Ag(s) is 0.0145 J K−1 mol−1. Assuming that the Debye law applies,…

A: Given data  Heat capacity: Cp=0.0145 JK-1mole-1  T = 4.2 K Also given Debye law applicable.…

Q: The constant-pressure heat capacity of a sample of a perfect gas was found to vary with temperature…

A: (a) At constant Pressure, we know: q=ΔH q= ∫Cpdt As the temperature is raised from 25oC to 300oC,…

Q: Iaterial: Block Mass: Сорper 5.0 g 10.0 g Heating Duration: D 2s T initial T final 71.9 °C Heat…

A: Specific heat capacity is the amount of heat required to raise 1°C temperature of 1 g of a…

Q: E2B.3(a) The constant-pressure heat capacity of a sample of a perfect gas was found to vary with…

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Q: The R value for the monatomic gas reaction was 1.987 and the value for the constant volume heat…

A: A gas which has single type of  atom is called as monoatomic gas .

Q: Consider a partıcle in one dimonsion with the Hamitonian: H= P² + VCr). where VCx) + o)=0, and V Is…

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