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explain if a buffer solution is 0120 m in a weak acid ka 35 times 10-5 and 0500 m in its conjugate base define what is
suppose the temperature of 470 l of ideal gas drops from 385 k to 275 ka if the volume remains fix and the initial
while active metals such as sodium are exposed to air they quickly form a coating of metal oxide the balanced equation
a 200 gram 40-centimeter-diameter turn table rotates on frictionless bearings at 60 rpm a 20 gram block sits at the
the nh3 is a weak base kb 18 times 10-5 and so the salt nh4cl acts as a weak acid explain what is the ph of a solution
this cart rolls at 4 ms toward a stationary 1kilogram cartfind maximum compression of the spring during the
explain would you expect the successive ionization energies to increase or decrease with the removal of each electron
two pieces of steel wire with identical cross sections have lengths of l and 4l each of the wires is fixed at both ends
x-rays having energy of 300 kev undergo compton scattering from a target the scattered rays are detected at 370 degree
a pair of speakers separated by 0700 meter are driven by the same oscillator at a frequency of 675 hz an observer
sufficient of a monoprotic acid is dissolved in water to produce a 00166 m solution and the ph of the resulting
laura is walking straight toward a plane mirror at a speed of 05 ms relative to the mirror find at what speed is her
explain what would be the value for a phosphorus standard if it contained 0035 kh2po4 as well as if 02ml of the
monochromatic light strikes a diffraction grating at normal incidence before illuminating a screen 210 meter away if
state the formation of methanol is significant to the processing of new fuels at 298k kp225 x104 for the reaction
an aluminum can is filled to the brim with a liquid the can and the liquid are heated thus their temperatures change by
two bars of equal mass are at 35 degc one is made from glass and the other from other metal the specific heat capacity
using an instance exemplify with equations the successive ionization energies necessary to remove the first second and
an 1100 n crate is being pulled across a level floor by a force f of 315 newton at an angle of 24 degree above the
explain the halogens form compounds among themselves called interhalogens and their formulas are xx xx3 and xx5 where x
a temperature of absolute zero occurs at -27315degc calculate this temperature on the fahrenheit
explain how much more stable in kjmol is 1-iodocyclohexane with i in the equatorial position as different to the axial
monochromatic light strikes a diffraction grating at normal incidence before illuminating a screen 192 meter awayif the
if you are trying to recognize the molar mass of an unknown gas as well as your measurements is atmospheric pressure
a peak intensity of an em wave is 340x107wm2 if the peak magnetic field is 287x10-6 determine what is the peak electric