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The following data was obtained from titrating a solution containing 25 mL of 0.0100 M MgCl2 solution, 1 mL of NH3OH buffer, and 10 drops of Calmagite with EDTA. Calculate the concentration of EDTA. Report the answer with three sig figs.
A studet determined the percentage KHP in an impure sample of KHP . a 3.150g sample of impure KHP required 41.50 mL of 0.1352M NaOH solution for titration.1) calculate the number of moles of NaOH required for this titration
Determine the quantity of stock 75% EtOH required to prepare 300ml of a 25% EtOH solution.
Chlorine is used to disinfect swimming pools and the accepted concentration for disinfection is 1.0 ppm (1 g chlorine per one million grams of water).
at 1 atm, how much energy is required to heat 55.0 grams of water at -24.0 degrees Celsius to water at 157.0 degrees Celsius
Compute KP at this temperature If the pH of an aqueous solution is 8.23, what are the hydrogen- and hydroxide-ion concentrations of this solution?
A 0.4000M solution of nitric acid is used to titrate 50.00mL of 0.237M barium hydroxide. (Assume that volumes are additive). a) Write a balanced net ionic equation for the reaction that takes place during titration.
Treatment of A with zinc amalgam and HCl affords an optically active, dextrorotatory hydrocarbon C. Identify compounds A, B, and C, including stereochemical configurations. Be sure to explicitly draw H and both wedge/dash bonds at any configuratio..
If a gas occupies 625 mL at 0 Celsius and 760 torr pressure, what will its volume be at 373 degree C and 1520 torr pressure? How would you describe how to separate a mixture of oil, sand, and saltwater.
the reaction is spontaneous below a certain temperature. Calculate that temperature. values are for delta H and delta S respectively.
For the reaction 2 HCl + Na2CO3 → 2 NaCl + H2O + CO2 what volume of 0.45 M HCl solution would be needed to produce 2.5 L of CO2 at STP
You have a 10.40-g mixture of table sugar (C 12 H 22 O 11) and table salt (NaCl). When this mixture is dissolved in 150. g of water, the freezing point is found to be-2.24°C. Calculate the percent by mass of sugar in the original mixture.
The best means of personal protection from radiation for emergency responders is the implementation of three basic principles: time, distance and shielding. Please show your work when answering the following questions.
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