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if the pka for acetic acid found in commercial white vinegar is 4754 at 298k then calculate the ph percent ionization
1identify the compound with the highest wavelength in an uv spectrum a benzene b phenol c phenolate ion d aniline e
the threshold or cut-off frequency for sodium is 440x10 14 hz it is subjected to radiation of frequency 900x10 14 hz
two football players are initially 2m apart at the same instant they accelerate towards each other each at different
a 20 kg projectile is fired at an angle of 600 to the horizontal with an initial velocity of 16 x 102 ms at the highest
the venturi tube may be used as a fluid flowmeter suppose the device is used at a service station to measure the flow
what effect would each of the following have on the calculated molecular weight of an unknown would the calculated
a hospital patient has been given 131-i half-life 804 days which decays at 62 times the acceptable level for exposure
1 an electron accelerates from rest through a potential difference of 182 vwhat is its final speed ms2 an electron that
you are arguing over a cell phone while trailing an unmarked police car by 260 m both your car and the police car are
a sled is resting on packed snow the coefficient of kinetic friction is now only 012 if a person weighing 650 n sits on
you select a rental package that includes a car with an average consumption of 600 rm liters of fuel per 100 rm km
a corner reflector is made from a triangular prism with an index of refraction of n254 in a right angle 45 45 90
you have designed a rocket to be used to sample the localatmosphere for pollution it is fired vertically with aconstant
at a rock concert the engineer decides that the music isnt loud enough he turns up the amplifiers so that the amplitude
richard is driving home to visit his parents 140 mi of the trip are on the interstate highway where the speed limit is
a student drops a ball from a window 35m above the sidewalk how fast is it moving when it hits the
an airplane starts from rest and accelerates at a constant 300 ms2 for 300 s before leaving the ground how far did move
the normal range of hearing is about 20 to 20000 hz assume that your hearing range is 26 to 18500 hz use 340 ms as the
a juggler throws a ball from height of 0950 m with a vertical velocity of 375 ms and misses it on the way down what is
a transverse wave of frequency 14 hz propagates down a string two points 15 cm apart are out of phase by pi6a what is
a car is approaching a reflecting wall a stationary observer behind the car hears a sound of frequency 790 hz from the
a spherical source radiates sound uniformly in all directions at a distance of 13 m the sound intensity level is 80 dba
a loudspeaker at a rock concert generates 10-2 wm2 at 220 m at a frequency of 10 khz assume that the speaker spreads
a 5 m long string has a mass of 110 g and is under a tension of 900 n what is the speed of a transverse wave pulse on