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Write thermochemical equations, two ways, for each of the following situations.
a) When 1 mole of NH4Cl is dissolved in water, 25.0 kJ is lost by the water
b) When acetic acid is neutralized by sodium hydroxide, 76 kJ (per mole of acetic acid) of heat is released
Make out all potentially hazardous steps in the procedure of the activation energy experiment. Define what safety precautions should be taken and why.
If a reaction is second order in hydroxide ion by explain what factor the initial rate would change if the concentration of OH- was doubled
The buffer containing human blood is carbonic acid and bicarbonate ion. In blood plasma are 0.024M of bicarbonate ion and 0.0012M carbonic acid
Assuming that nitrogen Henry constant for blood is the same as for water, calculate the amount (in grams) of nitrogen dissolved in blood when breathing normal air containing 80% of nitrogen at:
General Chemistry The pH of a solution of NH3 and NH4Br is 8.90. What is the molarity of NH4Br if the molarity if NH3 is 0.016M
A biodiesel is formed from esterification of oleic acid with 1-propanol. When comparing the oleic acid with the biodiesel (ester), we conduct an inflammability test Explain why the biodiesel is flammable while oleic acid isn't.
A hypothetical metal has a simple cubic unit cell and its atomic radius is 1.167 Å. Calculate the edge length of the unit cell. A hypothetical metal has a face-centered cubic unit cell and its atomic radius is 1.738
Starting with needed alkanes, alkenes and inorganic regrets, devise syntheses for the following compounds. Yout method should produce each compound in good yield and free of isomers.
Why do immunoglobulins have both "constant" and "variable" regions? explain how this aspect of the structure is important for the function of each region.
The original molarity of a solution of formic acid (HCOOH) with a Ka= 1.7*10^-4 whose pH is 4.52 at equilibrium is: A. 8.52 *10^-9 B. 2.24*10^-4 C. 6.78*10^-3 D. 3.54*10^-5 E. 5.32*10^-7
Question- What would happen if you reacted a Grignard reagent with an amide? I know that NR is a poorer LG than OR so would the amine be left behind in the reaction
How much aspirin can be made from 100.0 g of salicylic acid and 100 g of acetic anhydride? If 122 g of aspirin were obtained by the reaction, what is the percent yield?
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