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a compound cn is a weak organic base a 350 x 10-2 m solution has a ph 113 calculate the kb for cn the reaction is
a 10-turn square coil of area 0036m2 and a 20-turn circular coil are both placed perpendicular to the same changing
a calculate the h3o of a solution that has an oh- of 0000 0060m is the solution acidic basic or neutral show answer in
the compound ca3po42 has a ksp of 20 x 10-29 if the phosphate ion concentration is adjusted to a value of 25 x 10-2
a coil of 5 turns and area 20 cm2 carries a current of 80a if the coil is in a uniform external field of magnitude of
an electron of energy 400 ev moves at right angles to a uniform magnetic field along an arc of radius 20cm a second
a 0050 m cacl2 solution is adjusted to a ph 8 will caoh2s precipitate show all
the heater element of a toaster is 540m length of nichrome wire whos diameter is 0480mm the resistivity of nichrome at
a calculate the ph and poh of a solution that has an oh- concentration of 31 x 10-2m show your work and answer in 2
lactic acid abbreviated hl is made into a 0100 m solution whose ph 244 what is the ka for
a single atom of cesium-133 has a mass in atomic mass units of 13290545193 ua determine the total binding energyin mevb
write complete and balanced net ionic equations for the reaction that occurs between the following pairs of reagents if
hydrogen sulfide h2s is a weak diprotic acid calculate the sulfide ion concentration in a saturated solution of
a skier m 630 kg starts sliding down from the top of a ski jump with negligible friction and takes off horizontally
identifcal 20uc charges are placed on the vertices of a square with sides that are 20m in length determine the electric
a nichrome wire is used as a heating element in a toaster from the moment the toaster is first turned on to the moment
the free-fall acceleration on the surface of mars is about three eighths that on the surface of the earth the radius of
a coin is located 180 cm to the left of a converging lens f 160 cm a second identical lens is placed to the right of
two identical diverging lenses are separated by 18 cm the focal length of each lens is -80 cm an object is located 40
an object is placed in front of a converging lens in such a position that the lens f 170 cm creates a real image
an electron charge-16x10-19c is moving at 3x105 ms in the positive x direction a magnetic field of 08t is in the
what is the ratio of hco3- to h2co3 in an exhausted marathon runner whose blood ph is 71 note there is no need to
a long wire is known to have a radius greater than 40 mm and to carry a current that is uniformly distributed over its
the normal boiling point of methanol ch3oh is 647oc and its molar enthalpy of vaporization is hvap 718 kjmola when
a 038 h inductor and a 225 ohm resistor are connected in series to an ac generator with an rms voltage of 30v and a