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Why is it important to use a large excess of sodium borohydride when doing a reduction in aqueous ethanol. Consider what reaction might occur between water and sodium borohydride.
A booster shot is another dose of the original vaccine given some time after the original dose wasad ministered
Copper is highly sensitive to oxidation by molecular oxygen. Higher oxidation states of Cu do not catalyze diazocoupling reactions. Define oxidation (loss of electrons) and define a redox half react
Describe the most likely effect of temperature, catalyst loading, and concentration on the rate of a diazo coupling reaction.
An excess sample of solid Ag2SO3 is added to 100 mL of water. After equilibrium is achieved between the solid and its aqueous ions the silver ion concentration is found to be 2.486e-05 Use this info
Predict what may occur and why to the sequencing process ifthe concentration of ddNTP's is higher than 1% or lower than1%
Calculate the equilibrium partial pressure of bromine gas. No approximations can be made because the equilibrium constant is too large. I2 (g) + Br2 (g) 2IBr (g)
the NERNST equation is used to predict the impact of concentration on the cell potential. What value of slope does the Nernst equation predict for a plot of Ecell vs. log(cu2+ conc ratio)
You are a geneticist who has a single copy of a gene that you wish to sequence. However, DNA sequencing requires multiple copies of the gene
A buffer solution is composed of 1.360 g of potassium dihydrogen phosphate, KH2PO4, and 5.677 g of sodium hydrogen phosphate, Na2HPO4? What is the pH of the buffer solution
You wish to excise a gene from a human chromosome and to incorporate it into a plasmid vector, the gene from the chromosome and to open up the plasmid ring
What is the pH at the equivalence point of the titration and at the half equivalence point
A 25.0 mL sample of a solution of the weak base aniline, C6H5NH2, requires 25.67 mL of 0.175 M HCl to reach the equivalence point. (Kb for aniline = 4.0 x 10-10)
The half-life of cobalt-60 is 5.20 yr. How many milligrams of a 1.000-mg sample remains after 3.50 years?
How do the size and shape of a human epithelial cells differfrom those of the Elodea and onion cells, Why do Elodea and onion cells have more consistent shapes than human epithelial cells
Can someone describe what the sn1 and sn2 mechanisms are and the primary factors that effect why alkyl halides undergo one pathway over the other.
1.70 atm of I2 and 1.30 atm of Br2 are loaded into an evacuated container. The following reaction takes place with Kp = 117.6 Calculate the equilibrium partial pressure of bromine gas. No approximat
What is the pH during the titration of 25.00mL of 0.10M NH3 (Kb = 1.8 x 10-5) after the addition of 10.00mL of 0.10M HCl titrant?
What structures in Amoeba and Paramecium also occur in plantcells, Which do not occur in plant cells, How does shape and body consistency differ between amoeba and paramecium
Dr. Brown has a radioisotope source containing 1.2 x 106 (also written as 1.2E+06) atoms of Plutonium-238 in 1985, how many atoms will remain in 352 years
An investigator has purified tubulin subunits and added everythingto a test tube required for microtubule polymerization
Using the inverse square law of radiation, what Geiger counter reading would you get for a radioactive material when you are 3 feet from the source (assume an initial reading of 6300 R at a distance
WHAT IS THE PURPOSE OF DOING A STRUCTURAL STAINS ONENDOSPORE, CAPSULE, ADN FLAGELLA, THE PURPOSE OF CARBOHYDRATE CATABOLISM, THE PURPOSE OF FERMENTATION
Discuss the significance of these bacterium Staphylococcus epidermidis, and Enterobacter aerogenes Do they have medical or health importance
Calculate the pH at the equivalence point in titrating 0.100M solutions of each of the following with 8.0×10-2 M NaOH.