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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
two iron bolts of equal mass----one at 100c the other at 55 c----are placed in an insulated container assuming the heat
in a vollard titration a 05467g bromide containing unknown sample was dissolved and then 5000ml of 02000m agno3 was
define hair is made up of the protein keratin which is a polyamide that includes many alpha-amino acid residues hair is
define an attempt at synthesizing a certain optically active compound resulted in a mixture of its enantiomers suppose
explain what observed rotation is expected when a 118 m solution of r-2-butanol is mixed with an equal volume of a 0590
an efficient treatment for some cancerous tumors involves irradiation with fast neutrons the neutrons from one
state the grignard reagent phenylmagnesium bromide reacts with hexanal to give a product with a new chiral centre would
define a gas originally at 27 degrees celsius and 100 atm pressure in a 39 liter flask is cooled at a constant pressure