Question

A mole of two-state systems each has energy difference 2.346 × 10-21 J. 1) At what temperature...

A mole of two-state systems each has energy difference 2.346 × 10-21 J.

1)

At what temperature are 90% of the two-state parts in their low-energy states?

T90%=

K

2)

What is the heat capacity at T= 17 K?

CV=

J/K

3)

What is the heat capacity at T= 85 K?

CV=

J/K

4)

What is the heat capacity at T= 170 K?

CV=

J/K

Science   Advanced-Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A mole of two-state systems each has energy difference 2.346 × 10-21 J. 1) At what...
A mole of two-state systems each has energy difference 2.346 × 10-21 J. 1) At what temperature are 90% of the two-state parts in their low-energy states? T90%= K 2) What is the heat capacity at T= 17 K? CV= J/K   3) What is the heat capacity at T= 85 K? CV= J/K 4) What is the heat capacity at T= 170 K? CV= J/K
A mole of two-state systems each has energy difference 2.346 × 10-21 J. 1) What is the...
A mole of two-state systems each has energy difference 2.346 × 10-21 J. 1) What is the heat capacity at T= 17 K? CV= J/K 2) What is the heat capacity at T= 85 K? CV= J/K 3) What is the heat capacity at T= 170 K? CV= J/K
Find the average energy and the heat capacity at constant volume for a two-state system. Take...
Find the average energy and the heat capacity at constant volume for a two-state system. Take the two energies of the system to be ± ε/2. (b) Show that the result for CV is proportional to 1/T2 for kT >>ε , and that it is of the form CV ≈ (constant/T2 e ^(−ε/kT) at low temperature, kT << ε
Two objects, A and B, are brought into contact with each other. The initial temperature of...
Two objects, A and B, are brought into contact with each other. The initial temperature of object A is 230 K. The heat capacity of object A is a constant 3 J/K and the heat capacity of object B is a constant 4 J/K. Through the exchange of heat the two objects eventually obtain a common nal temperature of 320 K. 1)The initial temperature of object B was ____ K. 2) The amount of heat exchanged during the process of...
It is possible to go from a given initial equilibrium state of a system to a...
It is possible to go from a given initial equilibrium state of a system to a given final equilibrium state by a number of different paths, involving different intermediate states and different amounts of heat and work. Since the internal energy of a system is a state function, its change between any two states must be independent of the path chosen. The heat and work flows are, however, path-dependent quantities and can differ on different paths between given initial and...
1. A woman expends 92 kJ of energy in walking a kilometer. The energy is supplied...
1. A woman expends 92 kJ of energy in walking a kilometer. The energy is supplied by the metabolic breakdown of food intake and has a 35 percent efficiency. a) If the woman drives a car over the same distance, how much energy is used if the car gets 8.0 km per liter of gasoline (approximately 20 mi/gal)? The density of gasoline is 0.71 g/mL, and its enthalpy of combustion is 49 kJ/g. b) Compare the efficiencies of the two...
Suppose that a molecle has just two energy levels. The ground state is singly degenerate and...
Suppose that a molecle has just two energy levels. The ground state is singly degenerate and the excited state is triply degerate. If the enrgy difference between the two states (on a molar basis) is 52 kJ/mol at what temperature will the two states be equally populated? QUANTUM CHEMISTRY
High-Temperature Limit What happens when kBT ∆E? † This might represent a protein with two different...
High-Temperature Limit What happens when kBT ∆E? † This might represent a protein with two different conformations, an atom that is either bound to a surface or unbound, the reactants and products of a chemical reaction, the excited and ground states of a laser, and many other systems of interest. The two-level system is a versatile and useful model. Atomic Physics The lowest energy state of a hydrogen atom (an electron in a 1s orbital) has an energy of EA...
Two moles of nitrogen are initially at 10 bar and 600 K (state 1) in a...
Two moles of nitrogen are initially at 10 bar and 600 K (state 1) in a horizontal piston/cylinder device. They are expanded adiabatically to 1 bar (state 2). They are then heated at constant volume to 600 K (state 3). Finally, they are isothermally returned to state 1. Assume that N 2 is an ideal gas with a constant heat capacity as given on the back flap of the book. Neglect the heat capacity of the piston/cylinder device. Suppose that...
1. A molecule has a ground state and two excited electronic energy levels all of which...
1. A molecule has a ground state and two excited electronic energy levels all of which are not degenerate. The energies of the three states are E = 0, E1 = 1x10^-20 J and E2 = 2x10^-20 J. Calculate the partition functions at 298 and 1000K. What fraction of the molecules is in each of the three states at these temperatures?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT