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Define how you would perform a column chromatographic separation of a polar compound A and two chemicals and C that are non-polar. B is slightly less polar than C.
A person inhales air richer in O2 and exhales air richer in CO2 and water vapor. During each hour of sleep, a person exhales a total of 300. L of this CO2-enriched and H2O-enriched air.
How does the lead test kit actually work explain the chemistry behind the lead test itself. It uses Sodium Sulfide to test for lead.
Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life of 4.5 billion years
What is the mole fraction of NaCl in this solution. what would be the vapor pressure of this solution at 45C? The vapor presssure of pure water is 23.8 torr at 25C and 71.9 torr at 45C
what is the [OH-] in a solution that has a pOH of 2.70? Use E notation with 3 significant figures.
if 162 of wet is collected over water at 24 and a barometric pressure of 736 how many grams of have been consumed? the
Predict whether each of the following should form a normal or inverse spinel (hint: think about CFSE's): MgV2O4, VMg2O4, NiGa2O4, ZnCr2S4, NiFe2O4, Mn3O4, Fe3O4
kinetics of the reaction between iodide and persulfate. procedure popet 4 ml of the idoide solution and 12 ml
25.0 mL of a hydrofluoric acid solution of unknown concentration is titrated with 0.200 M NaOH. After 20.0 mL of the base solution has been added, the pH in the titration flask is 3.00. What was the concentration of the original hydrofluoric acid ..
In reference to question 6-88a: a. Explain why borane (BH3) reacts readily with the pi electron system of an alkene. b. Explain why diborane (B2H6) reacts only very slowly with C double bond C groups
calculate the vapor pressure of a solution of glycerol of 265ml in 3.80x10^2ml of H2O at the normal boiling point of H2O
How long would it take for 1.50mol of water at 100.0 °C to be converted completely into steam if heat were added at a constant rate of 21.0 J/s?
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