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Several grams of an unknown liquid were added to a 156 mL Dumas bulb at 22 C and 740 torr. THe open bulb was then heated in a water bath to 98 C and kept there until all the liquid had boiled and its vapor filled the bulb. The bulb was then sealed and cooled to room temperature where it weighed 0.8000 grams more than the bulb was empty. What is the molar mass of the known gas?
what is the difference between dipole or nonpolar molecular? what is the bond angles of a triagonal piramidal a bent
Calculate the equilibrium constant kc for a reaction occuring at a temp 0f -19 degree C and when delta G of 1.6 KJ/mol(use R =8.314 J/mol and 273 for kelvin conversion)
an intermediate step in the industrial production of nitric acid involves the reaction of ammonia with oxygen gas to
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:
What data would you plot in order to use the Nernst equation to determine the concentration of an unknown solution of ions?
If a heated metal block is placed into a beaker of water, what is the relationship between the final temperatures of the water and the metal block?
a mass of solid aluminum is at its melting point. what is the maximum mass of this sample that can be melted by 120 kj
a manometer connected to a pipe in which a fluid is flowing indicates a negative guage pressure head of 50mm of
A reaction mixture for an enzyme assay has a final volume of .210 ml iin the buffer .030 Mtris hydroxymethaneaminomehtanne, 4.0 mM ethylenediameinetretraacetic acid, .4 mM beta mercaptoethanol
a sample of 34.0 grams of nitrogen gas reacts with an excess of hydrogen gas to give an actual yield of 4.75 grams
For supercritical carbon dioxide, predict the effect that the following changes will have on the effect that the following changes will have on the elution time in an SFC experiment.
A 520.0 mL of a buffer solution that is 0.175 M in HC2H3O2 and 0.165 M in NaC2H3O2, Calculate the inital pH and the final pH after adding 0.020 mol of HCl
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