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Quantitative Chemical Analysis Question:
Assume that a single biological cell contains 150 femtomol of epinephrine. Also armed with the knowledge that each cell has 2.5x104 tiny compartments called vesicles and that each vesicle can be regarded as approximately spherical in shape with a radius of 200 nm. Compute the mean (average) molar concentration of the chemical in each vesicle.
Find the hydronium ion concentration the hydroxide ion concentration as well as the pH of a 0.1 M solution of KOH,if alpha=1.
Calculate the mass of reagents required to prepare 100 mL of a 275 mM solution of monobasic phosphate and 100 mL of a 275 mM solution of dibasic phosphate, each containing 2.75 mM MgCl2
The mass of a cube of iron is 252 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
Methane gas is completely combusted the products are carbon dioxide gas and water gas. What statement can be correctly made regarding the entropy change of this reaction
What are the major products of the following bromination electrophilic aromatic substitution reactions? a) phenol with 1 equivalent of Br2 b) anisole with 1 eq. Br2 c) diphenyl ether with 1 eq. Br2 d) acetanilide with 1 eq. Br2 e) 4-bromophenol with ..
(Nitration of Methyl Benzoate Worksheet Lab) The nitric acid used in the experiment is greater than 90% pure nitric acid. Why does the yield decrease as the percentage of water in the nitric acid increases. Why is the nitration of aromatic rings a..
Write equations that describe the reaction mechanism for acid hydrolysis of the following compound- (A) Acetyl Chloride
Which of the following refers to particularly stable arrangements of amino acid residues in a protein that give rise to recurring patterns
a photon of ultraviolet uv light possesses enough energy tomutate a strand of human dna. what is the energy of a
What properties of crabon dioxide determine its migration in our enviroment?
Show how a buffer system will not drastically change its pH by addition of a certain amount of a strong acid or base. Use 0.50 M buffer system and show how the pH will change upon addition of 10.0 mL each of ) 0.10 M of HCl or NaOH. Use any combin..
Calculate K for 2 NO(g) + O2(g) 2 NO2(g) from the observation that when equilibrium is established at 500 K, there are 0.190 moles NO2, 2.65 X 10-4 moles NO, and 0.606 moles O2 in a volume of 0.759 liters.
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