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Complete extraction of the ethanol would require several extraction steps. To simplify the laboratory and to cut down on errors and losses involved in transferring liquids, you will only do a single extraction. Assuming that prior experiments have shown the single-step extraction removes only 71.0 % of the ethanol, what is the mass of ethanol in your original unknown?
A water treatment plant has a flowrate of 6,000 m3/d. Determine the following (assume filtration rate is 60 m3/d-m2): a. Total filter area
When Fe(NO3)3 is dissolved in water, hexaaquiron(III) ions, Fe(H2O)6 3+, forms. Fe(H2O)6 3+ ions hydrolyze in aquesous solution accoring to the equation given below
What is the concentration of the acid and base form of acetic acid when you start the experiment? c) In the process of the enzyme catalyzed reaction, 5mM H+ is produced. What is the pH of the solution after the reaction is complete?
Show reasonable function group test to distinguish between the following compounds and write down their characteristic observation. A) 2-butanol and t-butyl alcohol
a 75.0 mL sample of potassium hydroxide, KOH, of unknown concentration is titrated with 42.5 mL of 0.575 M acetic acid. How many moles of KOH were in the sample?
hydrogen and nitrogen have different molecular weights, so mass fractions will be different than mole fractions.
Bromothymol blue is a common acid-base indicator. It has a Ka equal to 1.6 X 10^-7. Its unionized form is yellow and its conjugate base is blue. What color would a solution have at pH=5.8?
The first-order decomposition of SO2Cl2 to sulfur dioxide gas and chlorine gas at 320°C has a half-life of 8.75 hr. If one begins with 600. mmHg of pure SO2Cl2 in a 5.00-L flask at 320°C
A line in the emission spectrum of an atom occurs at a wavelength of 560 nm. What is the energy difference between the two energy levels involved in this emission.
Starting with 2-methyl-3-hexanone, show the complete mechanism for the acid-catalyzed formation of the imine using propylamine (Pr-NH2.)
suppose a can contains gas at a pressure of 755 mm Hg and a temperature of 25 degrees celsius, what would be the pressure if the can was heated to 1155 degrees celsius ?
the balanced net ionic equation for the reaction that takes place in aqueous solution between hydrogen peroxide and potassium iodide to make potassium hydroxide and molecular iodine.
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