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In the microscale oxidation of a Xylene to a Phthalic Acid, 825 mg potassium permanganate, 100 mg sodium carbonate, 3 mL water were put in flask and warmed then 125 microliters of unknown xylene and 10 mg detergent were refluxed for 45 minutes. Then we added sodium bisulfite until the purple color was gone for one step. What is the role of sodium bisulfite in such a procedure?
The combustion of one mole of propane, C3H8, releases 531 kcal. How much heat is released by the combustion of 1.20 moles of propane?
The molecular weight of vincristine, a pharmaceutical drug
In a particular experiment, 2.25 g of NH3 and 3.75 g of O2 are placed in a container and allowed to react. How many grams of NO will have been formed when all of the limiting reactant has been consumed?
an 8.4 g ice cube is placed into 260 g of water. calculate the temperature change in the water upon the complete
Determine the boiling point of a solution that contains 78.8 g of naphthalene (C10H8) dissolved in 722 mL of benzene (d = 0.877 g/mL). Pure benzene has a boiling point of 80.1°C and a boiling point elevation constant of 2.53°C/m.
Which of the following groups would have the highest priority in determining R and S. a) CH2CH2OH b) CH(CH3)2 c) CH2CH3 d) CH2C(CH3)3
Enough of a monoprotic acid is dissolved in water to produce a 0.0198 M solution. The pH of the resulting solution is 6.37. Calculate the Ka for the acid.
You dissolve 12.6352 g of potassium iodide in water and bring the volume of solution to 250.0 ml. What is the molar concentration of KI and what volume of 0.0436 molar hydrochloric acid is required to react with 30.0 ml of 0.0278 molar LiOH?
The following data were obtained when a Ca2+ ion-selective electrode was immersed standard solutions whose ionic strength was constant at 2.0 M.
The following reaction is example of elimination and substitution reaction. Categorized this reaction as an E1, E2, or SN1, SN2 CH3CH2O¯ + CH3CH2Br ? CH3CH2OCH2CH3 + Br¯ Please, explain.
Calculate the values of the rate constant k assuming that the reaction is first order
At pH 6.00 and pE 2.10, what is the concentration of Fe2+ (mol/L) in equilibrium with Fe(OH)3?
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