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calculate the mass of sodium acetate that must be added to 5000ml of 0200m acetic acid to form a ph 500 buffer
let alpha be an irrational number with continued fraction expansion alpha0 alpha1 show that the continued fraction
a thick copper wire of length 10 m is observed to stretch 010 cm what is the strain if the applied force is 50000 n
1 frank and oswalt report a molar absoptivity of 4700 l mol -1 cm-1 for the thiocyanatorironiii ion what t would you
estimate the terminal velocity for a dust particle in air assume it has a radius of 10 um and a density similar to that
what are three different mechanisms for the dehydration of both n-butanol and neopentyl alcohol to form
a simple pendulum is swinging back and forth through a small angle its motion repeating every 113 s how much longer
1 what is a zymogen how are they activated give an example2 what is a transition state and what is its relationship
a 958-m ladder with a mass of 222 kg lies flat on the ground a painter grabs the top end of the ladder and pulls
a camera lens usually consists of a combination of two or more lenses to produce a good-quality image suppose a camera
the activation energy of a certain reaction is 529 kjmol how many times faster will the reaction occur at 35 degrees c
an automobile has a 24 watt reading lamp in the ceiling of the carif it is attached to the 12 volt car battery how much
at normal incidence the intensity of sunlight at the earth is 1400 wm2 assume for simplicity that all of the incident
200 ml of a 010m weak acid ka 156x10-6 is titrated with a 020m strong basea what is the ph initially before any titrant
a rectangular loop is made up of 50 turns of wire and has dimensions of 45 x 55 cm it is located in a uniform 2 t
what is the ph of a 030 m pyridine solution that has kb19x10-9 the equation for the dissociation of pyridine is
a block of mass m135kg moves with velocity v163ms on a frictionless sufaceit collides with block of mass m217kg which
a solution is prepared by dissolving 172g of c2h6o2 in 500kg of h2o the final volume of the solution is 515ml calculate
the composition by mass of methyl alcohol ethyl alcohol n-propyl alcohol and water in two solutions a and b are given
a laser is used in eye surgery to weld a detached retina back into place the wavelength of the laser beam is 511 nm
naphthalene combustion can be used to calibrate the heat capacity of a bomb calorimeter the heat combustion of
you have a 200 resistor a 0400 h inductor a 500 f capacitor and a variable-frequency ac source with an amplitude of 300
millimoles of h in oxalic acid given the weight of oxalic acid h2c2o42h2o to be
a 150 ohm resistor is connected in series with a 0250 h inductor the voltage across the resistor is vr 380 cos 720t
the bones of a saber-toothed tiger are found to have an activity per gram of carbon that is 145 of what would be found