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Cp,m for CHCl3 is (91.47 + 7.5x10-2T) J/(K mol) in a limited temperature range. One mol of this compound at 325 K is cooled at constant P to 275 K by contact with a large reserve at 275 K. The temperature of the reserve does not change. Calculate the change in enthalpy for the CHCl3 sample and change in entropy for the CHCl3 sample. Finally, Calculate the change in entropy for the reserve and change entropy of the universe.
determine the energy of an electron excited from a hydrogen atom using bohrs model. determine the maximum wavelength of
Find the gram formula mass of each compound.
What is the percent by mass of NaHCO3 in a solution containing 70 g of NaHCO3 dissolved in 700 mL of H2O?
chromium metal reacts with 3.807 g of iodine. Using the conservation of mass law, predict the mass of product.
What unusual aspect of water is responsible for it unique characteristics as both a liquid and as a solid? Give examples of how this property of water would affect food systems during processing.
What would be the circumference in inches of a 25.0 pound solid steel cannon ball if the density of steel is 7.7 x 10^3 kg/m^3? Explain by dimensional analysis
What is the osmotic pressure of human blood at 37°C if human blood is isotonic to 0.16 M NaCl solution? Remember that NaCl almost completely ionizes in water.
50.0000 g of a compound showed that it contained 12.7520 g C,3.2105 g H, and 34.037 g S. The molecular weight of this compound was determined in a seperate expierment and found to be 94.19u.
If 40.0 g of Cu is placed into 100.0 g of H20 at a temperature of 20.0*C and if the temperature of the water rises to 23.0*C, what was the temperature of the Cu
Sulfuric acid is formed when sulfur dioxide reacts with oxygen and water. write the balenced chemical equation for the reaction. if 12.5 mol SO2 reacts, how many mol H2SO4 can be produced. How many mol O2 is needed.
calculate the expectation values of p and p^2 for a particle in the state n=1 in a square well potential
If I try to make a battery using copper and silver electrodes (along with the corresponding ionic solutions), will it work? Why or why not
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