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calculate the heat released when 720g of steam at 131c is converted to water at 440c assume that the specific heat of
for which of the following substances will the molar solubility in water be the same as that in an hcl or nh3 solution
the following reaction occurs in basic solutions what is the sum of the coefficients in the balanced equationmno4- nh3
a voltaic cell is made by placing an iron electrode in a compartment in which the fe2 concentration is 45 x 10-5 m and
what is the cu2 concentration at 25c in the cell zn s i zn2 10m ii cu2 aq i cus the cell potential is 104 v the
1 what is avogadros number represent2 how many atoms of xenon are there in one mole of xenon3 differentiate empirical
given this reaction at equilibrium n204- 2n02 calculate the equilibrium constant keq if the concentration of n204 and
identify which of the following reactions are acid-base reactions and which are oxidation-reduction reactionsa for
show the product that forms when 3-phenylpropanal is allowed to mix with sodium hydroxide
if all the scn- were not converted completely to fencs2 when the calibration curve was prepared would this raise or
show how to synthesize 2-methyl-2-pentene from an alkyl halide and a aldehyde or ketone plus any other necessary
what is the ph of a solution that results from adding 25 ml of 050 m naoh to 75 ml of 050 m ch3co2h ka of ch3co2h 18 e
explain the following observations in terms of shifting equilibria by le chateliers principle write the equation for
predict whether each of the following groups will be op- or m-directors in electrophilic aromatic substitution
ammonia will react with oxygen in the presence of a copper catalyst to form nitrogen and water from 1645 c to 179c the
a rate constant obeys the arrehnius equation the factor a being 22 1013 s-1 and the activation energy being 150 kj mol
in addition polymerization of methyl methacrylate the benzoyl peroxide is an initiator why is benzoyl peroxide called
what would the lewis dot structure be for 2cl molecule 2iodied ion and can you show me the polarity on both for
for an addition polymerization the initiation is the slow step 1st order in initiatorr2-------gt2r the propagation step
radium-226 atomic mass 226025402 decays to radon-224 a radioactive gas with a half-life of 1600 years what volume of
calculate the ph of a buffer solution made by mixing 44 ml of a 010 m ammonia solution with 58 ml of a 010 m ammonium
water h2o is easily formed at room temperature 298 k by igniting a mixture of hydrogen h2 and oxygen o2 gasses above
if a reaction has ea400 kjmol and is run at room temperature 298 k at what temperature will the rate be twice the rate
which of the following processes requires the least energy per molea helium forming hydrogenb ice at 0degc forming
consider an equilibrium mixture of four chemicals a b c and d reacting in a closed flask according to the equationa b