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one of the classical methods for the determination of the manganese content in steel is to convert all the manganese to
the units of parts per million ppm and parts per billion ppb are commonly used by environmental chemists in general 1
polychlorinated biphenyls pcbs have been used extensively as dielectric materials in electrical transformers because
a sample is a mixture of kcl and kbr when 01024 g of the sample is dissolved in water and reacted with excess silver
you made 1000 ml of a leadii nitrate solution for lab but forgot to cap it the next lab session you noticed that there
consider an experiment in which two burets y and z are simultaneously draining into a beaker that initially contained
some of the substances commonly used in stomach antacids are mgo mgoh2 and aloh3a write a balanced equation for the
a 650-g sample of a diprotic acid requires 1375 ml of a 0750 m naoh solution for complete reaction determine the molar
the vanadium in a sample of ore is converted to vo2 the vo2 ion is subsequently titrated with mno4 in acidic solution
the unknown acid h2x can be neutralized completely by oh according to the following unbalanced equation h2xaq oh
you have two 5000-ml aqueous solutions solution a is a solution of a metal nitrate that is 8246 nitrogen by mass the
tris pentafluorophenyl borane commonly known by its acronym barf is frequently used to initiate polymerization of
ammonia scrubbing is one of many process for removing sulfur dioxide from flue gases the gases are bubbled through an
acetylene is hydrogenated to form ethane the feed to the reactor contains 150mol h2mol c2h2a calculate the
a drug d is produced in a three-stage extraction from the leaves of a tropical plant about 1000 kg of leaf is required
a storage tank is purged continuously with a stream of nitrogen the purge stream leaving the tank is saturated with the
cunene is made by alkylation of benzene with propylene over zeolite catalyst to maximize selectivity to desired
a process fluid is pumped from the bottom of one distillation column to another using a centrifugal pump the line is
a fixed-bed reactor is to be designed for a hydrocracking process the reactor will treat 320000 lbhr of vacuum gas oil
hydrogen chloride gas produced by burning chlorine with hydrogen is required at a supply pressure of 600 knm2 gauge the
crude dichlorobenzene is pumped from a storage tank to a distillation columnthe tank is blanketed with nitrogen and the
the water gas shift reaction equilibrates rapidly at temperatures above about 450 degc at high temperatures this
in the manufacture of methyl ethyl ketone from butanol the product is separated from unreacted butanol by distillation
a fluidized bed is used in the production of aniline by the hydrogenation of nitrobenzene single-stage cyclones