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what is the percent yield of a reaction where 153g of oil of wintergreen is collected after 163g salicylic acid is
explain why treating a mixture of vanillin and eugenol to steam distillation would result in distillation of eugenol
propose a mechanism for the synthesis of 3-nitrophthalhydrazide from 3-nitrophthalic
what is the molar mass of toluene if 085 g of toleune depresses the freezing point of 100 g of benzene by 047 degrees c
a disk has a moment of inertia 30 x 10-4 kg m2 and rotates with an angular speedof 35 radsec what net torque must be
the osmotic pressure of 0010m mgso4 solution at 25 degrees c is 0318 atm calculate i the van hoff factor for this mgso4
find the temerature at which water boils on a day in the mountains when the barometric pressure is 593 mmhg gien the
palladium crystallizes in a face-centered cubic unit cell its density is 120 gcm3 at 27 degrees c calculate the atomic
which of the following aqueous solutions has the highest boiling point kb for water is 052 degrees cma 0wm kcld a and
if ka is 185 x 10-5 for acetic acid calculate the ph at one half the equivalence point and at the equivalence point for
how many grams of water are needed to dissolve 278 g of ammonium nitrate nh4no3 in order to prepare a 0452 m
the vapor pressure for water at 20 degrees c is 175 mmhg what is the vapor pressure of water over a solution prepared
mgo has the same crystal structure as nacl face-centered cubic how many oxide ions surround each mg2 ion as nearest
the molar heat capacity of silver is 2535 jmol c how much energy would it take to raise the temperature of 100g of
nitrogen oxide is a pollutant that causes health problems as well as acid rain no naturally forms in the atmosphere in
a gas is confined to a container with a massless piston at the top part c figure a massless wire is attached to the
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consider the titration of 300 ml of 0025 m nh3 with 0020 m hcl calculate the ph after the following volumes of titrant
three 5 l flasks fixed with pressure gauges and small valves each contain 4 g of gas at 273 k flask a contains h2 flask
1ml of 01m copper ii nitrate cuno32 is added to 1 ml of 01m barium chloride bacl2 what is the balanced net ionic
the vapor above a mixture of pentane and hexane at room temperature contains 355 pentane by mass what is the mass
100 ml of 0150 m acid h2a are mixed with 100 ml of 0340 m naoh calculate the h of the resulting solution at equilibrium
rxn of triphenylphosphine with benzyl bromide produces the corresponding phosphonium salt suggest a suitable mechanism
why is it important that any aldehyde used in the writing rxn be free of carboxylic acid
below is my question about concentrations in gases and liquids i understand henrys law and how it relates to partial