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suppose you are trying to dope the semi-conductor ge so that it will be an n-type semi-conductor which of the following
according to the vsepr theory the electrostatic repulsion between electron pairs surrounding an atom causesa an
when n2o5 g is heated it dissociates into n2o3 g and o2g according to the following reaction n2o5g lt--gt n2o3g o2g kc
element 107 now named bohrium was synthesized by german researchers by colliding bismuth-209 with chromium-54 to form a
a 300ml bleach sample is mixed with potassium iodide and acid to completely form triiodide ions you then titrate the
the gcms analysis of the compound gave one major compound the base peak in the mass spectrum had a mz value of 43
a 232 lb fullback run the 40 yd dash at a speed of 1925 10amp177 mih what is his de broglie wavelength in meters and
what mass in grams of alno33 molar mass21301 is needed to prepare 100 ml of an aqueous solution that is 0030 m in
to the nearest hundredths of a gram determine the gram molecular mass of caffeine a big gulp of mountain dew contains
describe the preparation of 12 ml of a 0050 m solution of each of the halogens using the reactions in the preceding
you have three 200 in3 blocks of stainless steel that have a total weight of 171 lb what is the density of stainless
explain the coordination chemistry and chemical speciation utilized in the analysis of fluoride in water samples by
do carbon dioxide and water have the same molecular geometry if not what attributes cause these molecules with similar
determine the limiting reagent and the excess reagent for the following balanced chemical reaction in which 1273 g of
compaire soltuions 2 and 4 how does the common-ion effect influence the ph of solution 4 explain fully and calculate
any differences between your quantitative determination of the half cell potentials and the theoretical values listed
outline how the following alcohol could be made using the indicated starting materials and other compounds using a
what is the favored dichlorocycloheptane product obtained from the dichlorination of cycloheptane with sulfuryl
when a basic solution of croh4- ion is slowly acidified solid croh3 precipitates out and then redissolves in excess
the energy from the radioactive decay of tritium is used to illinate exit signs that are posted in many buildings the
the line marked a in fig 1341 is the fluorescene spectrum of benzophenone in solid solution in ethanol at low
show the complete hydrolysis reaction of dimethylamine and predict the ph of the reactants and the
when heated calcium carbonate decomposes to yield calcium oxide and carbon dixoide gas via the reaction caco3s arrow
a three gases 800 of methane ch4 180g of ethane c2h6 and an unknown amount of propane c3h8 were added to the same 100-l
draw a concentration cell for 010 m cu2 and 20 m cu2 cell show the following on each compartment clearlya all the