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classify each of the following processes as spontaneous or nonspontaneous i h2ol --gt h2og t25 deg c vessel open to
using the dry cell or leclanche cell diagram please write the half reactions reactions at anode and cathode and net
1 explain how microorganisms can be used to produce electricity bacterial fuel cells2 explain why you feel pain when
consider a galvanic cell consisting of a magnesium electrode in contact with 10 m mgno32 and a cadmium electrode in
ammonia and preheated air are mixed to form a gas containing 150 mol nh3 at 500degc if ammonia enters the mixing unit
a niii coordination compound with an octahedral arrangement of ligands has been synthesized containing only water and
an element x forms the oxalate complex x2c2o4 which is 791 c and 2107 o by mass what is the identity of the element
determine the theoretical yield of h2s in moles if 40 mol al2s3 and 40 mol h2o are reacted according to the following
when synthesizing aspirin in the labmixed 2g salicylic acid 5ml acetic anhydride 5 drops concentrated sulfuric acid
draw a resonance structure complete with all formal charges and lone unshared electron pairs that shows the resonance
calculate the height of a column of methanol that would be supported by atmospheric pressure the density of methane is
the activation energy for the diffusion of car- bon in chromium is 111000 jmol calculate the diffusion coefficient at
a 500 ml gas sample is collected over water at a pressure of 740 mmhg and 60 degc what is the volume of the dry gas at
the sodium isotope2111 nawith a half-life of 23sundergoes decay by emitting a positronwrite the complete nuclear
activating effects using resonance contributors explain why the methoxy group is an activator and an orthopara director
activating effects question using resonance contributors explain why the nitrile group is a deactivator and a meta
phosphorus-32 is a radioactive isotope with a first order constant of 00485 days-1if a sample has an initial mass of
the net ionic equation for the reaction if any which occurs when aqueous solutions of manganeseii chloride and sodium
which of the following is not a common driving force in displacement reactions a precipitation b evolution of a gas c
the half life of the radioisotope 15847eu is 10 hrthe decay of a 160g sample of the isotope to 125g required how many
for the endothermic equilibrium caco3s nh4aq so42aq -gt caso4s nh3g hco3-aq explain the best set of changes to
in the balanced molecular equation for the neutralization reaction between phosphoric acid and potassium hydroxide the
write the molecular formula for a compound with the possible elements c h n amp o that exhibits a molecular ion at
please draw the mechanism for this reaction acetic anhydride c4o3h6 with 2 eqivalents of dimethylamine ch32hn makes
predict the formula and name of a binary compoundformed from the following elements a na and h bb and o c na and s d al