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0.25 mol of formic acid (HCO2H) is dissolved in enough water to make one liter of solution. The pH of that solution is 2.19. The Ka of formic acid is
Where is the actin-binding domain in this protein, How many amino acids in theactin-binding domain, hink through what must have been done to get the actin-binding domain of this geneinto the plasmid
When optically active propylene oxide is used, the 1,2-diol obtained from the acid hydrolysis has a optical rotation opposite from the Alkaline hydrolysis. Write the mechanism of each hydrolysis tha
Based on the principle of "like dissolves like", indicate the compounds listed below that are likely to be soluble in an organic solvent like methylene chloride or diethyl ether and those that are s
Why is the boiling point of the parent alcohol (i.e. cyclohexanol) higher than that of the product alkene (clycohexene) in the dehydration experiment
A sample of pure (1 chloroethyl) benzene had a specific rotation of 87.2 degrees, while pure R 1 chloro-1-phenyl ethane has a specific rotation of -109 degrees. This sample was reacted with excess a
Oxygen is a common oxidizing agent in nature. What changes in the oxidation number of oxygen must occur if it is to be an oxidizing agent
Define the normal boiling point of a liquid. Explain why atmospheric pressure affects boiling points of liquids.
Compare the polarity of hexane, dichloromethane, ethyl acetate, acetone, and methanol for tlc (thin layer chromatography)
What is the ph of a solution that is 0.0020 M acetic acid and 0.010 M sodium acetate? Note: the pKb for sodium acetate is 9.25
If you inhibit a GAP (GTPase activating protein) in liver cells usingsiRNA or a small molecule inhibitor, what happens to glucose/glycogen metabolism
Hind +h2o ind- + h3o+ When a few drops of methyl red are added to 1.0M HCL what is the color of the resulting solution
In the following oxidation-reduction reaction, identify the oxidizing agent, the reducing agent, and the number of electrons transferred. 6l- (aq) + BrO3- (aq) + 6H+ (aq) --> 3I2 (aq) + Br- (aq) +
For the chemical reactions shown below, calculate the number of electrons transferred in the redox process. 2Cr2(O7)2- (aq) + 16H+ (aq) --> 4Cr3+ (aq) +3O2 (g) + 8H2O (l)
In a cell biology laboratory experiment, two students independently isolated the enzyme lactate dehydrogenase, which catalyzes the reduction of pyruvate to lactate, from chicken heart
In going from room temperature (25.0 °C) to 10 °C above room temperature, the rate of a reaction doubles. Calculate the activation energy for the reaction.
nitrogen gas reacts with oxygen gas to form nitrogen monoxide gas. How many total electrons are transferred from each molecule of nitrogen or oxygen
Create a an experimental setup that would test hypothesis that people who carry rabbit's feet have good luck in term of avoiding colds and the flu
A solution contains 3.2x10-1M Co2+ and 2.5x10-3M Fe3+. NaOH is added to the solution, which cation will precipitate first?
Angiosperms (flowering plants) and vertebrates obtain nutrients from their environment, Describe 2 structural adaptations in angiosperms for obtaining nutrients from the environment
The reaction takes place in a bomb calorimeter where 4.50g of glucose are burned. What is the heat capacity of the bomb if the temp. of the water in the bomb increases from 22.75 degrees Celsius to
Find the pH of the resulting solution when 20.00mL of a 0.1000M triethylamine (CH3CH2)3N (Kb = 5.2x10-4) solution is titrated with 20.05mL of a 0.1000M HCl solution.
For the following reaction, if 11.2 L of Nitrogen are reacted to form NH3 at STP, How many liters of Hydrogen will be required to completely consume all of the nitrogen.
Determine the dominant configuration of energy for this system by identifying energy configurations and calculating the corresponding weights. What is the probability of observing the dominant conf