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Express the concentration of a 0.0790 M aqueous solution of fluoride, F-, in mass percentage and in parts per million. Assume the density of the solution is 1.00 g/mL.
How can I find the pH and volume (mL) of 0.0411M KOH needed to reach the equivalence point in the titration of 23.4mL 0.0390M HNO2? The question doesn't give me a Ka or Kb value.
describe the preparation of 12 ml of a 0.050 M solution of each of the halogens, using the reactions in the preceding question. Available to you are solid Ca(OCl)2; 1.20 M solutions of NaCl, NaBrO3, and CuSo4; a 0.40 M solution of NaI; a 0.50 M so..
Consider the following equilibrium process at 686°C: CO2(g) + H2(g) ? CO(g) + H2O(g) The equilibrium concentrations of the reacting species.
Dry ice (solid CO2 ) has occasionally been used as an "explosive" in mining. A hole is drilled, dry ice and a small amount of gunpowder are placed in the hole, a fuse is added, and the hole is plugged.
If the concentration of mercury in the water of a polluted lake is 0.375 ug (micrograms) per liter of water, what is the total mass of mercury in the lake, in kilograms, if the lake has a surface area of 14.65 square miles and an avery depth of 35..
Calculate the final temperature when a 25.6 gram sample of ice at 0oC is placed into a styrofoam cup containing 115 grams of water at 75.0 oC. Assume that there is no loss or gain of heat from the surroundings.
How many theoretical plates does the column have? What is the plate height (in mm) of the column if the column is 11.7 cm long?
A gas originally at 27 degrees celsius and 1.00 atm pressure in a 3.9 L flask is cooled at constant pressure until the temperature is 11 degrees celsius. determine the new volume of the gas and express your answer in Litre.
typically when a person coughs he or she first inhales about 2.40 l of air at 1.00 rm atm and 25 circ rm c. the
In the commercial manufacture of nitric acid, how many liters of nitrogen dioxide will produce 30 liters of nitric oxide given that both gases are at STP? 3NO2 + H2O-> 2HNO3 +NO
It is determined that 3.75 x 10^-4g of a contaminant is present in 3750g of a particular solution. What is the concentration of contaminant in ppm (m/m)?
Calculate the pH of a solution that is 1.20×10^?3 M in HCl and 1.00×10^?2 M in HClO2. Express your answer using three decimal places
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