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A sample of commercial hydrogen peroxide solution was analyzed using the procedure in this experiment. the results from three determinations were 3.03% ,2.89% and 3.22%Calculate :
1) the average relative deviation from the mean in percent.
2) the standard deviation of the percent hydrogen peroxide.
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.
In the titration of a monoprotic acid with a solution of sodium hydroxide of known concentration, what quantities are equal at the equivalence point
use standard reduction potentials shown below to calculate the potential of a nickel-cadmium cell that uses a basic
As the sample descended, the water pressure compressed the balloon and reduced its volume. When the pressure had increased to 75.0 atm, what was the volume of the sample? Assume that the temperature was held constant.
When 1.00 g of urea (CO(NH2)2) is dissolved in 200g of solvent A, the freezing point is lowered by 0.250C. When 1.50 g of the nonelectrolyte Y is dissolved in 125 g of the same solvent
A 1L steel tank is fitted with a safety valve that opens if the internal pressure exceeds 850 torr. It is filled with helium at 23 oC and 0.991 atm and placed in an oil bath.
how many moles of co atoms are present in 5.91 middot 1019nbspcopch334nbspmolecules? express your answer in scientific
What is the expected theoretical yeild of aspirin based on exactly 1 g of salicylic acid and 3.50 mL of Acetic Anhydride (Density = 1.082 mL^-1)
the mass of the flask is measured when the outside of the flask is wet. However in part B.3 the outside of the flask is dried before its mass is measured.
An athlete takes human growth hormone (HGH) that enhances his ability to have the best time of any Olympic marathon runner in history.
For organic chemistry, what is a concerted shift? how do things like acids or heat affect them? what other factors effect them?
A buffer is to be prepared by adding solid sodium acetate to 0.10 M CH3COOH. Which of the following concentrations of sodium acetate will produce the most effective buffer
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