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a system has four energy levels the degeneracies of these energy levels are as follows g0 3 g1 2 g2 1 g3 4a for 20
a solution is prepared by dissolving 023 mol of acetic acid and 027 mol of sodium acetate in water sufficient to yield
calculate the value of the reaction quotient qp at 25c for this reaction when the pressure of nitrogen is 32 atm the
large quanities of hydrogen are needed for the synthesis of ammonia one preperation of hydrogen involves the reaction
nis 4cog lt--gt nico4g given that the standard free energies of formation of co9g and nico4 are -1373 kjmol and -5874
a 5326 g sample of an unknown compound is found to contain 3758 g of carbon 0316 g of hydrogen and 1251 g of oxygen
explain the mechanisms of thermal explosions and branched-chain explosions the atomic bomb is a classical model of a
why is the angular momentum of some nuclei and molecules observable how is it observed what are some typical
ab has an internuclear distance of 14 a a has an atomic mass of 20 amu while b has an atomic mass of 60 amu in its
two one liter beakers 12 cm in diameter are connected via their bottoms by 10 cm of tygon tubing 1 mm in diameter the
an effusion apparatus is filled with helium at 25 c to a pressure of 726 mm hg it takes 2 hours 12 minutes and 6
a buffer is prepared by adding 300 g of sodium acetate formula wt8203gmol to 200 ml of 020 m acetic acid molec wt
calculate the ph of the buffer that is produced when 500 grams of boric acid hbh2o3 molecular weight 6184gmol ka
the managing director of a well-known company on wall street thrives on a diet of fruit jam bread pasta and coffee she
enzymes are proteins possessing catalytic activity proteases are a class of enzymes that catalyze the hydrolysis ie
a 144 g piece of metal was taken from a beaker of boiling water at 100 oc and placed directly into a calorimeter at 250
what is the ph of the solution formed by adding 277 grams of nicotinic acid m wt 12311 gmol to 250 ml of 0050 m naoh
nickel metal is plated as an underplating on steel surfaces that are to be chrome or gold plated the nickel metal in a
1002 g of dysprosium chromate decahydrate formula weight 85311gmol will dissolve in 100 ml of water at 25oc when 200
4fe 3o2 --gt 2fe2o3 if 50 moles of oxygen o2 react how many moles of fe2o3 will
the hall process for the production of aluminum involves the reaction of aluminum oxide with elemental carbon to give
write the condensed electron configuration using the noble gas electron configuration of antimony how many electrons