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to what temperature must a substance be heated so that its thermal energy is about 9 kjmol express your answer to the
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a bioengineer preparing cells for a cloning experiment bathes a small piece of rat epithelial tissue in a tris buffer
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a a student must make a five-fold dilution of a 215 m hcl solution if the student wishes to make 750 ml of the diluted
a 250 ml solution of 0600 m edta was added to a 570 ml sample containing an unknown concentration of v3 all v3 present
you titrate 250 ml of 0110 m nh3 kb 176 x 10-5 with 0100 m hcla what is the ph of the nh3 solution before the
a pure gold ring and pure silver ring have a total mass of 164g the two rings are heated to 635 c and dropped into a
an ecobotanist separates the components of a tropical bark extract by chromatography she discovers a large proportion
find the ph and volume ml of 00372 m naoh needed to reach the equivalence points in titrations of 200 ml of 00892 m
an unknown solid acid is either triprotic acid or diprotic tartaric acid to determine which you titrate a sample of
a 0050 m h2s solution contains 015 m nicl2 and 035 m hgno32 what ph is required to precipitate the maximum amount of
a gaseous compound containing hydrogen and carbon is decomposed and found to contain 8266 carbon and 1734 hydrogen by
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the enthalpy of vaporization of ethanol is 3856 kjmol it has a boiling point of 35144 k what is the difference in
complete the following calculation a student wants to react mgs with 100ml of 15m hcl but the intent is to have all the
calculate the crystal field stabilization energy cfse in dq units show your work for the following octahedral
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one mole of benzene component 1 is mixed with 2 moles of toluene component 2 at 60 c and at such low pressure that