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a 25.01(+and- 0.02) ml sample of an unknown acid was titrated using a standardized solution of 0.1106 M (+and - 0.1%) NaoH .
1) if it took 18.72 (+ and - 0.05) ml of the base to reach the equivalence point. what was the concentration of unknown acid?
2) what is the uncertainity associated with this determination?
A weighing dish containing an impure sample of benzoic acide was found to weigh 12.35g. the weighing dish weighs 8.22g. The impure benzoic acid was recrystallized and thoroughly dried. The recrystallized benzoic acid weighed 2.48g. What is the per..
Calculate the hydrogen ion concentration for an aqueous solution that has a pH of 3.45.
3AgNO3 + Na3PO4 --> Ag3PO4 + 3NaNO3 Silver nitrate and sodium phosphate are reacted in equal amounts of 200. g each. How many grams of silver phosphate are produced?
what mass of magnesium is required to produce enough gas to exert a partial pressure of .50 atm in a 50.0 mL flask at a temperature of 25.0 degrees celcius?
A 45.0-rm mL sample of this glucose solution was diluted to 0.500 rm L. How many grams of glucose are in 100. rm mL of the final solution?
draw 1-fluoropentane and predict the number of hydrogens per signal in a H-NMR spectra, and the splitting for each signal?
How do old dispersive infrared (IR) instruments use a grating to separate the infrared source by wavelength before passing through the sample?
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Complete and balance the equation for this reaction in acidic solution. Phases are optional
write an equat ion which, if solved,would give the average scalar momentum, , of molecules of an equilibrium gas.
The enzyme catalyzes the hydrolysis of esters such as methyl benzoate. Use the Michaelis-Menten and Lineweaver-Burke graphs to determine Km and Vmax
To ensure the impurity does not exceed this amount, how much water must be added to the solution before the temperature is dropped if the initial solution weighed 500 kg? How much Na2S2O2 will be generated in this process?
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