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Problem- Escherichia coli cells are about 2 micron long and 0.8 micron in diameter. How many E. coli cells laid end to end would fit across the diameter of a 0.5 diameter pin head? Do I find the area of the ecoli or how do I set this up?
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Given the quantities of chemicals used in this recipe one could believably have gotten a 100% chemical yield without having completely reacted all of the magnesium, or without having completely reacted all of the bromobenzene
Calculate the molality of a 0.055 M solution of ethyl alcohol of in water at 25 C. (Assume the density of the solution at such low concentration is equal to that of water at 25C, 0.997 g/mL.
flask of nitrogen is collected over water at a total pressure 765.0 mm Hg. If the partial pressure of the water vapor is 25.0 mm Hg, what is the pressure exerted by the nitrogen?
What is delta H for the following reaction? Mg + 2HCl -> MgCl2 + H2 if 0.158 g Mg reacts in 100.0 mL of solution and changes the temperature from 25.6 °C to 32.8 °C
which portion of the titration curve are you in to reach pH = 7? Show your calculations to prove that dilution of 10,000 gal aniline requires 0.58 gal of this acid.
Assuming a 1.0 cm cell and a barely detectable transmittance of 99.1%, what is a reasonable lower concentration limit that one could detect of this complex ( in both mol/L and g/L)
where is c p-450 located and what is their main function in xenobiotics transformation? what is the reaction
the products formed are sodium bromide and hydrogen sulphite. Calculate the mass of sodium bromide produced.
Polyethylene Density, (a) Which is the higher density of polyethylene, linear or branched? Select the choice with the best accompanying explanation.
Suppose 50.0 mL of 0.250 M CoCl2 solution is added to 25.0 mL of 0.350 M NiCl2 solution. Calculate the concentration, in moles per liter, of each of the ions present after mixing. Assume that the volumes are additive.
Predict whether the following reaction Sn(s) + 2Ag^(aq) = Sn ^2+ (aq) + 2Ag(s) would occur spontaneously at 25c given that [Ag^+] = 2.5*10^-2 M and [Sn^2+] = 0.5M
Calculate the pH of a solution prepared by mixing 0.0800 mol of chloroacetic acid plus 0.0400 mol of sodium chloroacetate in 1.04 L of water. (pKa of chloroacetic acid = 2.865.)
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