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The concentration of a chemical degrades in water according to first-order kinetics.The degradation constant 0.2 day^-1.If the initil concentration is 100.0 mg.L^-1.how many days are required for the concentration to reach 0.14 mg.L^-1?
A gas occupies a volume of 458 mL at a pressure of 1.01 kPa and a temperature of 295 K. When the pressure is changed, the volume becomes 477 mL.
Given tyrpsin digest yields the following amino acid sequences: k, tyk, wag, and spwr and a chymotyrpsin digest yields ag, rw, ty, and kkspw. what is the primary amino acid sequence of the antibiotic peptide
At 25oC, the acid dissociation constant for hypochlorous acid HOCl is 3.5E-8. Calculate the concentration of the hydronium ion in an aqueous solution of 0.30M HOCl.
What is w per mole for a reversible isothermal expansion of an ethane from 5-10 L/mol at 298k assuming a) ethane is an ideal gas and
use the henderson-hasselbalch equation to perform the givennbsp calculations compute the volume of the 0.500 m acetic
Consider the titration of 0.1000 M HBr with 0.1000 M KOH. Calculate the pH after 55.00 mL of the base has been added to 50.00 mL of the HBr solution
Why do I add strong acid (e.g. HCl) to the salt of a weak acid (ammonium acetate) to bring UP the pH of the buffer solution from the pKa
What is the pressure inside a system when the system-side column in an open mercury manometer is 75.0 mm lower than the atmosphere side when the atmospheric pressure is 735 mm Hg.
Monochloroacetic acid (HC2H2ClO2) is a skin irritant that is used in "chemical peels" intended to remove the top layer of dead skin from the face and ultimately improve the complexion.
In less than a 150 words, explain why swirling or shaking a solution and its drying agent hastens the drying process.
Predict the chemical formula of the compound that results from the reaction between the elements Si and O.
An electrochemical cell is constructed by coupling a Cu(II)/Cuhalf-cell with an Ag(I)/Ag half cell. The concentration of Cu(II)and Ag(I) are both 0.010 M. The observed potential
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