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2 long parallel wires carry currents 20 a and 5 a in opposite directions the wires are separted by 20 cm what is the
write the cell reaction for the combination of these half-cell reactions that leads to the largest positive cell emf
the naoh solution with a concentration of 188m is used to titrate a diprotic acid of unknown concentration 2500 ml of
a 284 g sample of c2h5oh is burned in a calorimetry containing 10 kg water the temperature of the calorimetry and its
to standardize a solution of naoh one uses a primary standard called potassium hydrogen phthalate khp it is a
what is the ph of 020 m nacl 2 what is the ph of 020 m nh4no3 3 what is the ph of 020 m
an electron moves in a circular path perpendicular to a constant magnetic field with a magnitude of 350 mt the angular
what is the concentration of kmno4 when you mix 2 ml of 160 m kmno4 with 10 ml of 250 m oxalic acid assuming that it
a 200m by 300m plate of aluminum has a mass of 324kg what is the thickness of the
1 ml of agcl dissociates into ag and cl- ions with concentrations of 13x10-5 mollwhen 1 ml of hcl is added what are the
the siren of a fire engine that is driving northward at 300 ms emits a frequency of 2000 hz a truck in front of this
about 27 of the body of a person floating in the dead sea will be above the water line assuming that the human body
a skier starts down a 26 slope after a vertical drop of 28 m the slope temporarily levels out and then drops at 19 an
sodium metal reacts with water to produce hydrogen gas and sodium hydroxide according to the chemical equation shown
the maximum speed of the pendulum bob in a grandfather clock is 045 msif the pendulum makes a maximum angle of 79 with
at 1atm pressure ice melts at 27315k in addition deltahfus 6009 kjmol density of ice 092gcm3and density of liquid
a ball spherical shell of mass m and radius r rolls without slipping up a ramp if the balls initial speed is v how high
determine the concentrations of the following ionic species present in a 0333 m solution of the diprotic acid h2so3 for
the current in a simple series circuit is 540 a when an additional resistance of 860 ohms is inserted the current drops
the change in the gibbs energy of a certain constant-pressure process as a function of temperature was found to fit the
a person takes in a breath of -2 degrees c air and holds it until it warms to 375 degrees c the air has an initial
the addictive painkiller morphine c17h19no3 is the principal molecule in the milky jiuce that exudes from unripe poppy
the size by thef an atom is sometimes considered to be measured by density of the radius of a sphere that contains 90
a solid horizontal cylinder of mass 105 kg and radius 114 m rotates with an angular speed of 723 rads about a fixed
calculate the concentrations of hydroxide and hydronium ions in a solution prepared by dissolving 0308 g of solid naoh