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a solution of cough syrup contains 500 active ingredient by volume if the total volume of the bottle is 700 ml how many
what is the minimum volume of boiling water needed to dissolve 200mg of phenacetin which has a solubility of 0076 in
sulfuric acid reacts with sodium chloride to form aqueous sodium sulfate and hydrogen chloride gas how many ml of gas
2which of the following statements is true a gas particles are attracted to one another and therefore behave as grouped
a reaction is carried out at 20 degree celcius what is the symbol that correspond with
what is the pressure in atmospheres of 250g of nh3 gas in a 300l container at 250oc
consider the following three reactions 1 h2g cl2g 2hclg 2 cs h2og cog h2g 3 fe3o4s 4h2g 3fes 4h2og for which of
on size-exclusion chromatogram you have three peaks 29 35 and 48 min column dead volume is 12 ml and flow rate 4
1 you need to analyze a mixture of alkanes which separation method will you choose and why consider two cases a
you need to analyze a mixture of alkanes which separation method will you choose and why consider two cases a mixture
predict the balanced chemical equation including the correct state of matter gas liquid aqueous solid for the reaction
draw an energy level diagram for the interaction of two atom each with an s orbital show how the mos would be occupied
for the hypothetical first order reaction a yields products k 00206 s-1 if the initial concentration of a is 0165 m how
a sample of concentrated nitric acid has a density of 141 gml and contains 700 hno3 by mass what mass of hno3 is
a copper refinery produces a copper ingot weighing 131 lb if the copper is drawn into wire whose diameter is 825 mm how
how much heat energy is needed to to raise the tempature of a 60g sample of aluminum from 31c too 993c the specific
in two-photon ionization spectroscopy the combined energy of two different photons is used to remove an electron from
if two molecules are non-superimposable but are mirror images are they enantiomers or the same
you are given 1000 grams of a mixture of feo and fe2o3 complete reduction of this mixture yields 758 grams of pure fe
a sample of calcium metal is contaminated by a certain amount of highly toxic radioactive thorium metal th a 1000-gram
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a solution is prepared by mixing 500 g of compound z molar mass 1500 gmol in 1000 ml of water the density of the
a 65g sample of diprotic acid requires 1375ml of a 75m naoh solution for complete neutralization determine the molar
for the first-order reaction 12 n2o4g yields no2g change in h 286kj the rate constant is k684 x 10 to the 4 s-1 at -23
draw a molecular orbital for 1357-octatetraene make sure to include labels relative energy bondingantibonding character