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describe in general terms the steps involved in the automated synthesis of the dna sequence
what is the solid that precipitates and how much of it is formed when an excess of sodium chloride solution is mixed
a beaker of nitric acid is neutralized with calcium hydroxide write a balanced molecular equation for this
naturally occurring magnesium has an atomic mass of 24312 amu and consists of 3 isotopes the major isotope mg-24
arrange the following molecules in order of increasing bond strength enter the correct sequence as a four digit number
if each unpaired electron gave rise to a magnetic field with a magnitude of b what would the magnetic field of ben
how many possible isomers exist for the following halogenated ethene moleculesac2h2br2bc2h2brclcc2hbrclfadd the answers
suppose that a linear li6 molecule could be formed by combining the 2s orbitals on each atom into delocalized mos what
the h2 molecular ion has an equilibrium bond length equal to twice the bohr radius a0 using the lcao bonding orbital
suppose that a linear na11 molecule could be formed by combining the 3s orbitals on each atom into delocalized mos how
what is the sum of the h-x-h bond angles in degrees in the following hydrides beh2 bh3 ch4 calculate the bond angle for
the he i 2122 ev photoelectron spectrum of a molecule shows a series of equally spaced sharp peaks corresponding to
the he i 2122 ev photoelectron spectrum of a molecule shows three sharp peaks corresponding to photoelectron kinetic
calcium carbide is an intermediate in the manufacture of acetylene calcium carbide was also used for years in mining
taking into account the existence of any lone pairs of electrons what is the approximate geometry of electron groups
draw the structure of methanol ch3oh what is the approximate geometry of the electron groups around the oxygen
antimony pentafluoride sbf5 is a member of a class of molecules called super acids what is the predicted structure of
if you add 625 ml of a 300 m hbr solution to 1875 ml of water to make a new solution the concentration of the new hbr
if a molecule having an ionization energy of 1151 ev produces a photoelectron having a kinetic energy of 86508e-19 j
reaction of sbf5 with hf produces octahedral sbf6- and a free proton which is the reason for the super acid character
if a second-period diatomic molecule has 5 electrons in its valence shell total of 2s and 2p electrons what is the
a silver block initially at 599 degree centigrade is submerged into 1000 g of water at 244 degree centigrade in an
one tablespoon of peanut butter has a mass of 15g it is combusted in a calorimeter whose heat capacity is 130 kjdegree
helium gas enters an adiabatic nozzle steadily at 500oc and 600 kpa with a low velocity and exits at a pressure of 90