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marine fats have high concentrations of omega-3 fatty acids what importance do they have in the
how would you prepare 1 l of a 050m phosphate buffer at ph 75 using crystalline k2hpo4 and a solution of 10m
iron crystallizes with body centered cubic bcc structure and a lattice parameter is 28664 a what is its the theoretical
a solution is prepared by dissolving 249 g of sucrose c12h22o11 in 624 g of water what is the vapor pressure of this
combustion analysis of 2400 g of an unknown compound containing carbon hydrogen and oxygen produced 4171 g of co2 and
what is the molarity of a potassium triiodide solution ki3aq if 3000 ml of the solution is required to completely react
2 noh2 n2o h2owhat will happen to the h2o when equilibrium is reestablished after the following stresses are applieda
1 when doing a recrystallization what observations would prompt you to perform a hot filtration2 what problems might
pure benzophenone freezes at 481 celcius of 125 g of biphenyl c12h10 molar mass 1542 gmol with 2538 g of benzophenone
a white solid precipitate was dissolved with 6m nh3 the filtrate on adding 6m hno3 yielded a white precipitate again
if 550 ml of ethanol density0789 gml initially at 80 c is mixed with 550 ml of water density 10 gmlninitially at 286 c
ph for the reaction 2 h2o l ltgt h3oaq oh-aq is 558 kjmol and the equilibrium constant for the reaction is keq
one student used 01 moll naoh to titrate an unknown diprotic acid the concentration of the unknown acid is 51 gl and
on adding 10 drops of 6m hcl solution to an unknown solution of metal ions a chem-127 student observed a white
a student find out the mass percent of ni is 297 nh3 is 344 and cl is 359 in a compund containing nickel ammonia and
the thermochemical equation for the formation of ammonia from elemental nitrogen and hydrogen is as follows n2g3h2g--gt
when zinc chloride zncl2 reacts with nh3 solution a white crystalline compound znnh3ncl2 is produced a student used the
a student determined the following percent transmittances for a 05 m chromium ion solution using a spectronic 20
the two methods used to analyze the coordination compound of nickel ii ion ammonia and chloride ion werea percipitation
based on the data gathered in the rutherfords scattering experiments the concept of atomic structure was modified which
delta g for the reaction ag2 os-----gt2ags12 o2g is 11 kjmole what will be the value of delta g for this reaction at 25
consider the reaction 3x-----products the reaction is initiated with a 250 m in x the observed rate constant is 0020s-1
how much cu will be deposited by the passage of 235a in a solution of 020 m cuso4 for half an hour cu2
draw the skeletal structure where each atom obeys the octetduet rule and no atom possesses a formal charge for the
in a battery water is used as a salt bridge and the two electrodes are carbon and aluminum find the standard reduction