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consider a galvanic cell consisting of a magnesium electrode in contact with 10 m mgno32 and a cadmium electrode in
a 55 kg woman and an 80 kg man stand 140 m apart on frictionless icea how far from the woman is their cmmb if each
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
a blue ball is thrown upward with an initial speed of 243 ms from a height of 1 meters above the ground 3 seconds after
an element x forms the oxalate complex x2c2o4 which is 791 c and 2107 o by mass what is the identity of the element
a molecule of dna deoxyribonucleic acid is 228 microm long the ends of the molecule become singly ionized negative on
determine the theoretical yield of h2s in moles if 40 mol al2s3 and 40 mol h2o are reacted according to the following
a charge of -050 microc is situated in an electric field of magnitude 90 times 104 nc directed horizontally to the
when synthesizing aspirin in the labmixed 2g salicylic acid 5ml acetic anhydride 5 drops concentrated sulfuric acid
a right triangle has sides of 30 40 and 50 cm a charge of -10 x 10-6 c is placed at the right angle a charge of 10 x
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
a rabbit runs in a straight line with a velocity of 14 ms for a period of time rests for 12 s and then runs again along
a thin gold ring of radius 111 cm carries a uniform charge per unit length of 11e-14 cm find the electric field on the
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
a 20 kilogram cart is initially at rest on a level floor determine the kinetic energy of the cart after a constant
the net ionic equation for the reaction if any which occurs when aqueous solutions of manganeseii chloride and sodium
an object is suspended on a frictionless inclined plane by a rope parallel to the incline as illustrated above if the
a traveler first drives 188 km east then 318 km southeast and finally 111 km south find the travelers total