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positively charged aluminum ion al3 has a mass of 450 1026 kg after being accelerated through a potential dierence of
an electron moves along the z-axis with vz 44 x 107 ms as it passes the origin what are the strength and direction of
a block of mass 175 kg is kept at rest as it compresses a horizontal massless spring k 883 nm by 559 cm as the block
a beam of sunlight encounters a plate of crown glass at a 3650deg angle of incidence crown glass has n 1520 for red
object o1 is 147 cm to the left of a converging lens with a 120-cm focal length a second lens is positioned 100 cm to
explain the average osmotic pressure of blood versus water is 760 atm at temp t310k compute the total solute
a explain why must the slit width of a prism monochromator be varied to provide constant effective bandwidths but a
compute the change in internal energy e for a system that is giving off 250 kj of heat also is changing from 1200 l to
explain ammonia and hydrogen chloride gases react to form solid ammonium chloride a 100 l reaction flask contains
liquid nitrogen trichloride is heated in a 211-l closed reaction vessel until it decomposed wholly to gaseous elements
explain a sample of an unknown gas effuses in 109 min an equal volume of h2 in the same apparatus under the same
a 454 g block of lead is at an initial temperature of 225 degrees celsius define what will be the temperature of the
state a 1300 ml sample of a solution that is 29times10-3 m in agno3 is mixed with a 2200 ml sample of a solution that
state cfcs such as cf2cl2 are refrigerants whose use has been phased out for the reason that their destructive effect
the solubility of l-aspartic acid an amino acid in water has been resolute as follows all values are grams of aspartic
describe the major e2 reaction product formed when trans-1-chloro-2-ethylcyclohexane reacts with hydroxide ion in
complete as well as balance the displayed half reaction in acidic aqueous solution taking into account the
explain what observed rotation is expected when a 114 m solution of r-2-butanol is mixed with an equal volume of a 0570
state substituting two hydrogen atoms on the benzene ring with methyl groups write line-angle formulas of all
compute the ratio of the masses of the buffer components nh3nh4cl necessary to make the buffer with a ph of
a give two instances each from metals as well as nonmetals to support these generalizationsb explain what connection is
when metal oxides react with water the oxygen usually ends up as the hydroxide ion separate from the metal in contrast
explain what mass of ammonium chloride must be added to 250 l of a 0165 m nh3 in order to gain a buffer with a ph of
balloon utilized for atm research has volume of 1 x 10 exponents of 6 presume balloon is filled with helium stp and
state a solution with density of 0935 gml contains 378 h2co 150 c2h5oh and 472 water by weight define is the molarity