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In this experiment, 0.150 g of a mixture, containing 0.100 g of a neutral unknown compound and 0.050 g of a benzoic acid impurity, is dissolved in 4.0 mL ether. The mixture is extracted two times with 2.0 mL of NaOH ultimately separating the neutral compound and the benzoic acid. Following the extraction 6 M HCl was added to both of the NaOH extracts, resulting in a precipitate. Provide the chemical reaction that occurred when HCl was added. For this reactions use hydronium in place of HCl as that is the active acid. Show all lone pair electrons and formal charges. What does the amount of precipitate in each tube indicate about the extraction procedure?
Consider the titration of a 22.0 -mL sample of 0.110 M HC2H3O2 with 0.130 M NaOH. Determine each of the following. A. The initial pH B. the volume of added base required to reach the equivalence point in mL
Determine the pOH (to two decimal places) of the solution that is produced by mixing 2.34 mL of 7.82×10-3 M MgO with 60.9 mL of 3.77×10-2 M MgH2.
What is the pH of a 1.2 x 10-4 M solution of KOH? What is the hydronium concentration of this solution?
A sample of compact bone has a mass of 5.80 g and a volume of 3.00 cm3. What is the density of the sample?
The density of hydrogen gas in a flask is 0.147 g/L at 305 K. what is the pressure inside the flask? Calculate the density in G/L of CH4(g) at 75 Celsius and 2.1 atm (R= .08206 L*atm/mol*K).
The 9.163 g their air Air Cs equals 1005J/KG c in an inflated balloon is warmed over a toaster and increases in temperature by 11°C the balloon expands against one atmospheric pressure and changes volume for one liter to two liters
upon evaluating the contents of a solution, declared that it was a 32 molar solution of ethanol in water. Why is this incorrect?
A catalyst lowers the activation energy of a reaction from 215 kJ to 206 kJ. By what factor would you expect the reaction-rate constant to increase at 25*C? Assume that the frequency factors
What type of radioactive decay would be expected for the unstable nuclide
What types of bonds are responsible for the secondary structure of a protein? How would the addition of a heavy metal affect the secondary structure of a protein?
What is the IUPAC name for Fructose. Not the 1,3,4,5,6- Pentahydroxyhex-2-
What is the total pressure in the vessel just after the reagent gases are added (assume ideal behavior) and what are the mole ratios of the reagent gases in the vessel before the reaction begins?
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