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The vapor pressure of water at 60°C is 0.196 atm. In order to reduce the vapor pressure to 134 torr (1 atm = 760 torr), how much propylene glycol (condensed formula: CH2(OH)CH(OH)CH3) must be added to 0.450kg of water?
The standard enthalpy of fusion of bromobenzene is 10.7 kJ/mol at its melting point, 242.4 K. What is the standard change in entropy for the melting of bromobenzene at its melting point?
a sample of 1.0 mole of a perfect gas with cp 20.8 j k-1 is initially at 3.25 atm and 310k. if it undergoes reversible
An ion chromatographic analysis of that sample found it to contain 41 micrograms of N02. How many pub of N02 is in that air?
A neutral atom as the electron arrangement, 2, 8, 8, 1. How many additional electrons can be placed in the first, second, third and fourth shells of this atom, respectively?
For the given reaction, 2 HCl (aq) + Ba(OH)2 (aq) BaCl2 (aq) + 2 H2O (l) 73.0 grams of HCl are allowed to react with 342 grams of BaCl2.
If you take 10mL of the solution you made in A add 90 mL of water, mix and then take 5mL of the mixture and bring it to 25 mL, Explain what will be the concentration of the final solution in molars, millimolars and micromolars
Why is it advisable to run a mixed melting point determination on samples of two different compositions before concluding that the two compounds are identical
To characterize the elution properties of the solute in a way independent of the geometry of the chromatographic column, the retention constant R = Vo / Ve is used. R is equal to the fraction of solute in the void volume Vo and
Do some research on properties and applications of liquid crystals. Present a 250 word summary of your findings to the class,
Which of the following rate law best illustrates the kinetics of the reaction between hydrochloric acid and sodium thiosulfate
Given Mo Energy level diagram for diatomic molecules, which of the following molecular molecular ions has a bond order of 3. Why
For the reaction N2(g) + 3H2(g) --> 2NH3(g) the standard change in Gibbs free energy is ?G° = -72.6 kJ/mol. Explain what is G for this reaction at 298 K while the partial pressures are PN2=.200 atm, PH2=.250 atm and PNH3=.950 atm
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