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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
calculate the ph of a solution formed by mixing 100 ml of 0100 m hbr with 200 ml of 0200 m
a transformer has 100 turns in its primary windings and 500 turns in its secondary winding if the primary voltage and
a 9 g ice cube at -10degc is placed in a lake whose temperature is 17degc calculate the change in entropy of the
silver ion reacts with excess cn- to form a colorless complex ion agcn-2 which has a formation constant kf21020
1 all of the following substances can function both as bronsted acids and bases except hpo4 2- po4 3- h2o2 will
a omega mass 1672 mevc2 at rest decays into a kaon k mass 4937 mevc2 and a lambda 0 mass 11157 mevc2 k 0what is
an unstable particle called the pion has a mean lifetime of 25 ns in its own rest frame a beam of pions travels through
mgoh2 is a sparingly soluble salt with a solubility product ksp of 56110-11 it is used to control the ph and provide
a thin film of soap n 135 is floating in air if light of wavelength 600 nm is missing from the reflected light what is
the final temperature of a mixture of solution prepared by dissolving 250 gram of naoh in 750 ml of water both
an object is placed 5 cm in front of a spherical mirror a virtual image is formed 10 cm behind the mirrora what is the
potassium hydroxide is used to precipitate each of the cations from their respective solution determine the minimum
a disk 10cm in diameter is located 25 m from a 100-w light bulb the surface of the disk is a perfect reflector and the
the active ingredient of aspirin is acetylsalicylic acid a monoprotic with a ka 33 x 10 raised to -4 power what is the
an rl circuit has a v9v battery a r13000ohm resistor and a l07h connected in series with a switch the switch is left
given stock solutions of 3 m potassium acetate and 500 mm edta and a jar of solid tris powder molecular mass 121 gmol
tarzan swings on a 280 m long vine initially inclined at an angle of 320deg with the vertical what is his speed at the
two separate containers filled with nitrogen gas each contain 016 moles of gas container 1 has a volume of 0188 l at a
a 40 kg child stands on the edge of a rotating merry-go-round with a radius of 2m the moment of inertia of the