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Determine an expression for the change in entropy when two blocks of the same substance and of equal mass, one at temperature T1 and the other at T2 are brought into thermal contact and are allowed to reach thermal equilibrium. Evaluate your answer for two blocks of copper of mass 500g, with Cp = 24.4 J/mol*K, taking T1 = 500 K andT2 = 300 K.
Why is HC2H3O2 not a good conductor or strong electrolyte?
A United Nations toxicologist studying the properties of mustard gas, S(CH2CH2Cl)2, a blistering agent used in warfare, prepares a mixture
If 200 mL of a .20 M HCl solution is consumed in the above reaction, how many grams of each product would be produced?
separation techniques were performed on a sample containing only sand and salt. the mass of the initial sample was
The very dense metal iridium has a face-centered cubic unit cell and a density of 22.56 g/cm3. Use this information to calculate the radius of an atom of the element.
At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3. H2(g)+I2(g) 2HI(g) Kc=53.3 At this temperature, 0.800 mol of H2 and 0.800 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present..
Tell wheter each of the experimental errors in Exercise 3 will affect the melting point of the unknown component. If it will, tell how it will affect the melting point and explain why
At high temperature, ammonia reduces copper(II) oxide to the free metal: 2NH3(g) + 6CuO(s) => N2(g) + 3Cu2O(s) + 3H2O(g) Step 2: 2NH3(g) + 3Cu2O(s) => N2(g) + 6Cu(s) + 3H2O(g)
For the following changes, determine if the equilibrium would (L) shift left, (R) shift right, (N) have no effect. H20(g)+C(s) CO(g)+H2(g)
When power was turned off to a 30.0 gal. water heater, the temperature of the water dropped from 75.0°C to 22.5°C. How much heat was lost to the surroundings? (1 gal = 3.785 L) Assume the density of water is 1.00 g/mL.
you are given the following free energy data in kcalmol for 25 degrees c and 1 bar total pressure. see belowspecies
The raw sewage of a wastewater treatment plant has a BOD5 of 230 mg/L and suspended solids of 350 mg/L. Estimate the BOD5 and suspended solids concentrations in the primary effluent (assume typical removal efficiency for both parameters).
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