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A student was instructed to prepare 250 mL of a 0.500 mol/L solution potassium permanganate. What is the correct order for this
Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7
Which of the following peptides has a pI close to 5.5? Assume that the pKa value of the alpha-amino group is 9.6 and the pKa for the alpha-carboxylate group is 2.3. A. Ser-His-Arg-Asn B. Val-Thr-Gln-Tyr C. Asn-Cys-Ala-Gly D. Arg-Ile-Asn-Arg E. Asp..
The following reaction was carried out in a 2.25L reaction vessel at 1100 K: C(s)+H2O(g)---CO(g)+H2(g) If during the course of the reaction, the vessel is found to contain 10.0mol of C, 13.2mol of H2O, 3.40mol of CO, and 6.00mol of H2, what is the..
Calculate the volume of hydrogen gas at 25 celcius and 1.00atm required to produce an amount of energy equivalent to that produced by the combustion of a gallon of octane (C8H18).
Examine the Lewis structure of methylene blue and explain why it is a cation instead of a neutral species. Where would the extra electron otherwise reside
state how much greater the bleach should be to be considered in large excess. if the dye is 1times10-5 m how much can
What is the pH of 15 ml of 1.9 M HCl diluted to .6 L. What about 54 ml of 2.5*10^-2 M HCl to 150 ml of 1.0*10^-2 M HI
The concentration of Mg2+ in seawater is 0.052 M. What is the pH when 95% of the magnesium ions will be precipitated as the hydroxide salt. (Ksp, Mg(OH)2 is 8.9 x 10-12).
A solution is made by mixing 30.0 mL of ethanol, C2H6O, and 70.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C. Ethanol density=0.789 Vapor Pressure (Torr)=43.9 Water density=0.998 Vapor Pressure (Torr)=..
For each of the following reactions indicate which substance is oxidized and reduced. Which substance is the oxidizing agen and which is the reducing agent
The four bonds of carbon tetrachloride (CCl4) are polar, but the molecule is nonpolar because the bond polarity is canceled by the symmetric tetrahedral shape. When other atoms substitute for some of the Cl atoms
Confirm whether an acid base reaction occurred stoichiometrically. The concentration of concentrated nitric acid is 15.8 M. For full credit show all calculations
The relative sweetness of sucralose is 60000. The relative sweetness of sugar is 100. How many grams of sucralose would you need for a solution that has the same sweetness as one made with 2.00g of sugar
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