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the acid-dissociation constants of sulfurous acid heso3 are k a1 17 x 10-2 and k a2 64 x 10-8 at 250 degc calculate
a charged capacitor is connected to an inductor to form an lc circuit with a frequency of oscillation f 16 hz at time
a solution contains 200mmol hf dissolved in 100ml h2o this solution is titrated at 25oc with 0100m naoh
an object of mass 68 kg is attached to a spring of force constant 1830 nm the object is set into simple harmonic
a child on a swing-set swings back and forth if the length of the supporting cables for the swing is 28 m what is the
one liter of a buffer solution is made by mixing exactly 500 ml of 1000 m acetic acid and 500 ml of 0500 m calcium
what volumes of 01000m acetic acid and 01000m sodium hydroxide should be mixed to prepare 1000l of a buffer solution of
a speedy tortoise can run with a velocity of 10 cms and a hare can run 20 times as fast in a race they both start at
draw the structure of diacetylferrocene comment on the distribution of the two acetyl groups over the two aromatic
a car originally traveling at 30 ms manages to brake for 5 seconds while traveling 125 m down hill at that point the
determine the empirical formula and the molecular formula of a compound that has the compostion of 800 c and 200 h the
starting from rest a car travels 1350 m in 1 minute it accelerated at 1 ms2 untill it reached its cruising speed then
the electric field strength just outside the outer conductor of a coaxial cable of outer radius of 02cm is e7200nc
at 1000 k the equilibrium constant for the reaction br2 g 2 br g is 28 x 104 pressure is in atmospheres what does g
one particle has a mass of 400 10-3 kg and a charge of 9 microc a second particle has a mass of 700 10-3 kg and the
the equilibrium constant kp for the reaction n2o4 g 2 no2 g is 0142 at 298 k what is g for the
if the enthalpy of vaporization of ch2cl2 is 290 kj mole-1 at 250 oc and the entropy of vaporization is 925 j mole-1
for the decomposition of caco3 s into cao s and co2 g at 1 atm estimate the minimum temperature at which you would
a mass of 032 kg attached to a spring with a spring constant of 730 nm is set into simple harmonic motionwhat is the
the most intense line in the cerium spectrum is at 4187 determine the frequency of the radiation producing this
a ray of light strikes a thick sheet of glass n 15 at an angle of 25 degrees with the normal find the angle of the
for the reaction 3 c2h2c6h6 at 25c the standard enthalpy change is -631 kj and the standard entropy change is -430
the image of a tree on a 35 mm color slide is 14 mm high it is to be projected onto a screen 6 m from the slide and is
listen to whales songs and explain the effects of sound waves in the air and water by bringing examples with formulae
a cyclo-butadienec4h4 has a delocalized pi system write out the huckel secular determinant equation for