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a 100 l container of water was passed during a solid phase extractor as the water passed through the extractors the
state an expression for the concentration of a spiked sample x if the 5ml of sample with analyte concentration c was
a buffer solution was made by adding 85ml of a 08 m acetic acid solution and 80ml of a 031 m sodium acetate solution to
1 which of the subsequent elements have two unpaired electrons and consequently are paramagneticna mg al si p s cl ar2
consider two identical firms with constant marginal costs c1 c2 c and no capacity constraints who both discount
analyze how unemployment and inflation affect the economy illustrate how gdp is used to measure economic growthwhat
methane and oxygen react to form carbon dioxide and water what mass of water is formed if 080 g of methane reacts
epsom salts is magnesium sulfate heptahydrate if a student takes 250 g of epsom salts and heats it to drive off the
how many moles of baoh 2 are required to completely neutralize 0441 mole of hc 2 h 3 o 2
metal stand specifies a maximum load of 450 lb will it support an aquarium that weighs 595 lb and is filled with 379
the boiling point of a solution containing 1044 g of an unknown nonelectrolyte in 5000 g of acetic acid is 1592 degrees
a 453g sample of a solid containing ni is dissolved in 200ml water a 500ml aliquot of this solution is diluted to
state the formulas of the three singly chlorinated isomers formed when 2 2-dimethylbutane reacts with cl2 in the
the reason your classmate cannot determine the compound in a chemical reference manual is that 2
find out the molecular mass and its uncertainty for c3h7oh note pay attention to significant figures and use the atomic
compute the proportion of isomeric products that would be expected from each reaction carried out in the experiment if
the kw for water at 0 degc is 012times 10-14 compute the ph of a neutral aqueous solution at 0
specified that ka for hbro is 28 times 10-9 at 25 degc explain what is the value of kb for bro- at 25 degc specified
state the equation for the reaction associated with the ka2 of sulfuric acid h2so4state the equation for the reaction
to find out the molar absorptivity of your dye require preparing a series of solutions by dilution of your stock
depict the structure of the organic product that is formed when the compound shown below undergoes a reaction with
explain what is the silver ion concentration in a solution prepared by mixing 451ml of 0364 m silver nitrate with 425ml
a proposed investment consists of constructing a building purchasing production machinery and operating for 20 years
in a certain experiment 2000 ml of 0800m hcl were added to a o1022 gram sample of mco3 the excess hcl required 564 ml
explain why in some cases a compound may be an acid as well as in other case not for example hcl hydrogen