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oxalic acid h2c2o4 has acid dissociation constants ka159x10-2 and ka264x10-5 what is the ph after 2000 ml of 00500 m
assume that you have carried out a radical chlorination reaction on r-2- chloropentane and have isolated in low yield
an airplane is flying at 1651mih its speed in still air in a direction such that with a wind of 644mih blowing from
what is the band gap energy in kilojoules per mole if bule diamonds absorb orange light with a wavelength of
a 368-kg fish swimming 133 ms swallows an absent-minded 642-kg fish swimming toward it at a velocity that brings both
world energy supplies are often measured in the unit of quadrillion british thermal units 1012 btu generally called a
on a frictionless horizontal surface below a 15 kg mass traveling at 25 ms collides with and sticks to a 3 kg mass that
the equilibrium constant for the reaction of fluorine gas with bromine gas at 300 k is 547 and the reaction is br2g
at time t0s a wheel has an angular displacement of zero radians and an angular velocity of 28 rads the wheel has a
consider the fermentation of one molecule of glucose glc to two molecules of lactate lac glc 2 lac which of the
a mass of 20 kg is attached to a light string which is wrapped around a cylindrical spool of radius 10 cm and moment of
which of the following is true of the binding energy derived from enzyme-substrate interactions a most of the binding
a convex mirror has a focal length of -340 cm a 150-cm-tall object is located 340 cm in front of this mirror determine
a 1000 ml sample of 0300 m naoh is mixed with a 1000 ml sample of 0300 m hno3 in a coffee cup calorimeter both
hearing damage may occur when a person is exposed to a sound intensity level of 900 db relative to the threshold of
a student observed the melting point of 4-methoxychalcone to be 63-70oc which of the following is are plausible
a spring is hung from the ceiling a 0509 -kg block is then attached to the free end of the spring when released from
one piece of 50 g ice at 0c is added to m grams of water at 25c the system is insulated from outside and the exchange
which of the following peptides has a pi close to 55 assume that the pka value of the alpha-amino group is 96 and the
at the bottom it strikes a block of mass m2m which is at rest on the horizontal surface assume that the transition at
what is the pka for the pyridium cation pyridine h2o lt----gt pyridium cation oh- kb 171 10-9 a pka for the pyridium
consider two wind instruments with pipes of the same length but one is open and the other is closed on one end if the
a student performs a series of calorimetry experiments she determines the calorimeter constant ccal for her coffee cup
a transverse wave is propagation on water surface and is described by the equation y001sin10x 30 t where x and y are
show the bond angles which are at least slightly different that are shown by the h2ccbr2