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During a HPLC experiment we used octaecylsilane (ODS) stationary phase. What are 2 other examples of reversed-phase stationary phases?
How many grams of NaOH are contained in 230.0 mL of a 0.800 M sodium hydroxide solution?
a volume of 125 ml of rm h2o is initially at room temperature 22.0rmcircc. a chilled steel rod at 2.00rmcircc is placed
Use the following balanced equation for the problem below: 2HCl + Na2CO3 = 2NaCl + CO2 + H2O If 35.0 gm of Na2CO3 is reacted with 18.0 gm of HCl, how many grams of CO2 are produced
Write the half-reactions for the silver-silver chloride and calomel reference electrodes.
When 28.0 ml of 0.500 M H2SO4 is added to 28.0 ml of 1.00 M KOH in a coffee-cup calorimeter at 23.50 degrees Celsius, the temperature rises to 30.17 degrees Celsius. Calculate the delta H of this reaction.
The molar heat of vaporization of benzene at 1atm is 30.8kJ/mol. The boiling point of benzene at 1atm is 78.3C. Calculate the entropy change when 11.5g if benzene boils at this temperature
Calculate the amount of heat required to heat a 3.8kg gold bar from 27 degree celsius to 63 degree celsius.
Specify the number of possible isomers of Trinitrophenol. Abbreviate ortho (o), meta (m) and para (p).
The percent composition by mass of a compound is 40.0% carbon, 53% oxygen and the rest is hydrogen. find the empirical formula of the compound
If there are initially 7.21 grams of the compound dissolved in 110.0 mL of water, how many grams will remain in the aqueous layer after extraction with one 30.0 mL portion of ether?
The half life of polonium-210 is 138.4 days. How many milligrams of polonium-210 remain after 415.2 days if you start with 2.0 mg of the isotope?
Enough of a monoprotic acid is dissolved in water to produce a 0.0200 M solution. The pH of the resulting solution is 6.32. Calculate the Ka for the acid.
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