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A student prepares a solution of carbonate-free NaOH. Upon drama a rough titration, the student finds the concentration to be 0.0673 M instead of 0.1000 M. presuming that the volume of the solution is 950.0mL, explain how many grams of sodium hydroxide should be added to the solution to produce a concentration as close as possible the desired 0.1000 M? Presume that the sodium hydroxide is carbonate-free.
A 1.28-gram sample of copper is heated with sulfur to produce 1.60 grams of a copper sulfide compund. Calculate the mass percentages of copper and sulfur in the compund.
Hydrochloric acid HCL, completely ionizes when dissolved in water. Calculate the PH of a solution containing
in the manufacturing of computer chips cylinders of silicon arecut into thin wafers that are 3.00 inches in diameter
A patient weighs 165 pounds and is to receive a drug at a dosage of 45.0 mg per kg of body weight. The drug is supplied as a solution that contains 25.0 mg of drug per mL of solution. How many mL of the drug should the patient receive?
Use the standard half-cell potentials listed below to calculate the standard cell potential for the following reaction occurring in an electrochemical cell at 25°C.
Define what mass of CO2 is consumed in the photosynthesis of 48.3 g of glucose (C6H12O6) from carbon dioxide and water
determine the concentration of O3 in air sample (in ppm)If 10,000 Litres of air bubbled through iodide solution and back titrated with 19.4 mL of a 1.2x10-4 M Sodium thiosulfate, also spelled sodium thiosulphate solution to reach equivalence,?
Assume your solution contains lead and iron but not silver or nickel. Explain how will you know that: - Either silver or lead is present ( that is, describe what you will see that will tell you at least one of these is there)
The addition of s^2- ion to Fe(OH)2(s) results in the formation of FeS(s). Explain why the addition of S^2- ion to Cr(OH)3(s) does not result in the formation of Cr2S3(s)
the hydrolysis of methyl acetate into ch3oh and ch3cooh in 1m hclhas been studied at 25 degrees c. the extent of
How many different types of resonance structures can be drawn for the ion SO32.
In the synthesis of t-butyl chloride from t-butyl alcohol, what is the purpose of using concentrated HCl instead of dilute HCl
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