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two resistanceless rails rest 37 cm apart on a 40 degree ramp they are joined at the bottom by a 055 ohm resistor at
given that the pka of h2so4 is -9 and that hno3 is -14 explain why nitration occurs more rapidly in a mixture of
write the electron configuration and shell diagram for each of the following elements a magnesium b arsenic c
in a particular photoelectron spectrum using 2121 ev photons electrons were ejected with kinetic energies of 1001 ev
the ionization energy of xe5p and o2p electrons are 121 ev and 136 ev respectively calculate the energies and
a piece of paper is spotted with a solution containing a mixture of 2 components a and b the chemical affinity of a for
a 50-gram ice cube at 0 degrees celsius is heated until 40 grams has become water at 100 degrees celsius and 50 grams
an ion exchange column is used to separate several similar proteins these proteins have the exact same sequence except
an electron drops from the l shell to the k shell and gives off a k x-ray with a wavelength of 02510 nm what is the
a 100 g lead bullet at 23 degrees c slames into a stone wall assuming no loss of energy to the environment how fast
an interesting enzyme 56 kda is used in catalytic amounts very small to cleave a membrane protein 65 kda into two
one mole of an ideal monatomic gas is taken through the cycle shown in the figure assume that p 3 p0 v 3 v0 p0
a mixture of 3 peptides a kfts b nels c gdsf were separated using an anion exchange column at ph 8a list the order of
an x-ray photon with a wavelength of 0120 nm scatters off a free electron at rest the scattered photon moves off at an
a car accelerates from rest to a speed of 190ms in 600 seconds if the car weighs 16000n what average power must the
an ion exchange column is used to separate single-stranded polynucleotides at ph 2 a gradient of increasing salt
the three gases n2 o2 and no are in equilibrium the formation of no is endothermic write the equation for the
how many moles of sulfur trioxide are formed from 3 moles of sulfur dioxide using the given balanced equation 2 so2 o2
a car approaches you at a constant speed sounding its horn and you hear a frequency of 76 hz after the car goes by you
a 0750kg block is attached to a spring with spring constant 165nm while the block is sitting at rest a student hits it
according to the equation for the balmer line spectrum of hydrogen a value of n3 gives a red spectral line at 6563 nm a
12455 cs has a half-life of 308sa if we have 53microg initially how many cs nuclei are presentb how many are present
sodium hypochlorite naclo is the active ingredient in bleaches calculate the ratio of the concentrations of clo and
a parallel beam of unpolarized light in air is incident at an angle of 575 degrees with respect to the normal on a
67 nitrogen from a gaseous phase is to be diffused into pure iron at 675 c if the surface concentration is maintained