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How many grams of sodium azide are needed to fill a 30*30*25cm bag to a pressure of 1.30atm at 21.0C? 2NaN3=3Na+2N2
A student in a hurry decides to let the solvent travel only half way up the chromatographic paper in chromatogram 2. predict the effect of this procedural change on the resultion
2-methyl-2-butene and 2-methyl-1-butene with Br2 in CH2Cl2
which of the following processes are exothermic?
Celsius and -125 degrees Celsius , respectively. Calculate the entropy changes for fusion ( solid to liquid) and vaporization (liquid to gas ).
Determine whether or not each set of quantum numbers shown could correctly describe an electron in an atom. (Use the drop down menus to choose "POSSIBLE" or "IMPOSSIBLE" for each statement.
The Winkler titration for the determination of dissolved oxygen involves the treatment of the sample with iodide ion (I-) in the presence of manganese ion catalyst (Mn2+) as follows.
Reduction of Conjugated Ketones with Sodium Borohydride, Suggest mechanisms of reaction for 1,2-addition and for conjugate addition (1,4-addition) of NaBH4 to a conjugated
Using extraction techniques how would you separate a mixture of aniline and toluene using dichloromethane as the extraction solvent?
If at a given moment O2 is reacting at a rate of 0.317 mol/L s, what is the rate of formation of H2O?
sketch the qualitative molecular orbital diagram for the complexes.
What would be the pressure of the gas, in kPa, if it were transferred to a container at 24 degrees Celcius whose volume is 55.0 L.
Calculate the pH at the equivalence point in titrating 0.100 M solution of sodium hydrogen chromate (NaHCrO_4 )with .080 M NaOH.
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