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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
an ac generator with a frequency of 105hz and an rms voltage of 225 v is connected in series with a 100 k ohm resistor
a 2000-ml sample of 0200 m hbr solution is titrated with 0200 m naoh solution calculate the ph of the solution after
a spaceship is observed from the earth to be moving toward a star at a speed of 080 c if the distance from the
a buffer solution contains 010 mol of acetic acid and 013 mol of sodium acetate in 100 l what is the ph of this
pitcher throws 015kg baseball what is the approximate speed of the pitch if force exerted by pitcher is
two moles of an ideal gas at 400 k expand quasi-statically and isothermally from an initial volume of 310 l to a final