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The normal boiling point of ethanol is 78.3 deg C and its molar enthalpy of vaporization is 38.56 Kj/mol. what is the change in entropy in the system in J/k when 97.2 grams of ethanol at 1 atm condenses to a liquid at the normal boiling point?
Which of the following pairs would NOT interact to produce an attractive/favorable weak interaction within a proteins 3D structure at physiologic pH.
When the pollutant's concentration reaches 90% of its steady-state value, the flow of the pollutant is stopped. On what date will the concentration of the pollutant fall to 1% of its maximum concentration? Assume that the rate constants of the inc..
Calculate the radius of iridium (Ir) atom given that Ir has FCC crystal structure, a density of 22.4 g/cm³ and atomic weight of 192.2 g/mol
if the aluminum block is initially at 25circ c what is the final temperature of the block after the evaporation of the
How many grams of O2 will be required to completely react with 2.43 grams of Mg metal ribbon to produce MgO.
The chemical mechanism of the reaction involves transfer of phosphoryl group to the enzyme, forming a phospho-enzyme intermediate: a His residue is phosphorylated, and H2O hydrolyzes the P enzyme intermediate. Determine the type of mechanism
At what temperature would the rms speed of H2molecule be same?
a 5.0 g sample of a hydrate of CaCl2 was heated, and only 4.3 g of the anhydrous salt remained. what percentang of water was in the hydrate?
What is the theoretical yield of aspirin in the reaction of 3.60 grams of salicylic acid with excess acetic anhydride?
khc8h4o4 aq naoh aq -gt nakc8h4o4 aq h2o la. naoh is approximately 0.1 m. each titration will use 25.00 ml of khp
A layer of peat beneath the glacial sediments of the last ice age has a carbon-14/carbon-12 ratio that is 22.0% of that found in living organisms. How long ago was this ice age
The broad feature of the spectrum are therefore expected to be hydrogen-like, the differences arising largely from the mass differences. Predict the wavenumbers of the first three lines of the Blamer series of positronium. What is the binding ener..
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