(from 'Survey of Physical Chemistry', 5th edition)
Calculate the Î"S for a gas in a closed system that is an ideal monatomic gas initially at P= 5 atm, V=5L, and T = 310 K which expands to V= 10 L and its temperature is increased to 390 K.

If we approximate the atmosphere to be 79% nitrogen (N_2) by volume and 21% oxygen (O_2), estimate the density of air (kg/m^3) at STP conditions (0 degrees C, 1 atm)

The problem is this....
A gas with a volume of 4.0L is contained is a closed container. Indicate the changes in pressure when the volume undergoes the following changes at a constant temperature.
A. The vloume is compressed to 2 L.
B. The vloume is allowed to expand to 2 L.
C. The volume is copmressed to .40 L.
(Thi

One mole of an idealgas a 273.15 K is allowed to expand isothermally from 10.0 MPa to 1.00 MPa. Make a table to show your answers for the following questions. (Show your work - the subscript m indicates the value per mole.)
- View attached document to see questions a)-d).

Calculate the work done when 50 g of iron dissolves in hydrochloric acid in (a) a closed vessel and (b) an open beaker.
Hint: Use the idealgas law and equations to determine amount of work done when a gas expands.

Show that the equation:
μ (T, P) = μ° (T) + kT ln (P/P°)
is in agreement with the explicit formula for the chemical potential for a monatomic idealgas. Show how to calculate μ° for a monatomic idealgas.

A rigid tank contains 0.40 mol of oxygen (02). Determine the mass (in kg) of oxygen that must be withdrawn from the tank to lower the pressure of the gas from 40 atm to 25 atm. Assume that the volume of the tank and the temperature of the oxygen are constant during this operation.
Thanks

A sample of ammonia gas with a volume of 7.0 mL at a pressure of 1.68 atm is compressed to a final volume of 2.7 mL at constant temperature. Use the idealgas law to calculate the final pressure.
a. 100 atm
b. 2.2 atm
c. 1 atm
d. 4.4 atm

1) One mole of an idealgas is changed from 273.15K and 2 atm to 233.15K and 0.4 atm. Calculate delta S for this change in state.
2) Arrange the following chemicals in order of increasing entropy at STP.
n - pentane (g)
methanol ( l)
ethanol (l)
ethanol (g)