Calculate δH and δStotal when two iron blocks each with mass of 1.00kg, one at 25'C and one
at 250'C are placed in contact with each other in an isolated container. The specific heat capacity of iron is 0.449 J/'C*gram and can be assumed to be constant over this temperature range.

The vapor pressure for chlorotrifluoroethylene is in the table below. Determine the normal boiling point and the enthalpy of vaporization and compare to literature values.
Temp (oC) Vapor Pressure (Pa)
-146 1
-134 10
-119 100
-99 1000
-71 10000
-28.4

5.2 Calculate the entropy change for each of the following:
(a) 10g of steam at l00°C and a pressure of one atmosphere condensing into water at the same temperature and pressure. (The latent heat of vaporization of water is 22571 Jg^-1).
(b) 10g of water at l00°C and a pressure of one atmosphere cooling to 0°C at the same

Delta S (standard conditions) for the following reaction is favorable even though delta H (standard conditions) is not:
C2H5OH (l) <-> C2H5OH (g)
Assume that ethanol boils at the temperature where delta G (standard conditions) for this reaction becomes zero. Use the values of delta H and delta S for this reaction to estimate

100 g of ice is melted at 0 degree C, and the resulting water is warmed to room temperature (25 degree C). Calculate delta S (change in entropy) for this whole process and comment on the relative magnitude of the entropy changes for the two steps. Explain the sign of delta S.

The normal boiling point of bromine is 58.8 C. Given that the vapor pressure pressure of methanol (sic) is 75.0 torr at 2.5 C, Calculate the molar enthalpy of vaporization of bromine.
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Please see the attached file for the fully formatted problem(s).
1. A heated copper wire 1 mm in diameter is in a pool of water at 1 atm. What is the maximum heat flux (q/A)?
The temperature difference is related to the heat flux (q/A) by the following equation:
[Equation]
What temperature difference (which we'll cal

Assume that the enthalpy of fusion of ice is 6020 J/mol and does not vary appreciably over the temperature range 270-290 K. If one mole of ice at O°C is melted by heat supplied from surroundings at 280 K, what is the entropy change in the surroundings, in J/K?

1) Find the standard enthalpy of cyanamide (CH3N2 (s) ) from its heat of combustion to CO2 and H2O of -741.40kJ/mol.
2) Calculate delta S if the temperature of 2.50mol of an ideal gas with Cv = 5/2R is increased from 160K to 675k under conditions of
a. constant pressure
b. constant volume