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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
in a head-on collision a car stops in 012s from a speed of 19ms the driver has a mass of 72kg and is fortunately
write complete and balanced net ionic equations for the reaction that occurs between the following pairs of reagents if
lactic acid abbreviated hl is made into a 0100 m solution whose ph 244 what is the ka for
a vertical spring of spring constant 115nm supports a mass of 75kg the mass oscillates in a tube of liquid if the mass
a copper rod had an initial diameter of 40 mm and an initial cross-sectional area of pid24126 mm2 what was the rods
hydrogen sulfide h2s is a weak diprotic acid calculate the sulfide ion concentration in a saturated solution of
an object with mass 27 kg is executing simple harmonic motion attached to a spring with spring constant k280nm when 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
the normal boiling point of methanol ch3oh is 647oc and its molar enthalpy of vaporization is hvap 718 kjmola when
a 92-kg skier is sliding down a ski slope that makes an angle of 30 degrees above the horizontal direction the
a man enters a tall tower needing to know its height he notes that a long pendulum extends from the ceiling almost to
a 2000-ml sample of 0200 m hbr solution is titrated with 0200 m naoh solution calculate the ph of the solution after
a spring is hung from a ceiling and an object attached to its lower end stretches the spring by a distance d 680 cm
a buffer solution contains 010 mol of acetic acid and 013 mol of sodium acetate in 100 l what is the ph of this
calculate the ph of a solution formed by mixing 100 ml of 0100 m hbr with 200 ml of 0200 m
silver ion reacts with excess cn- to form a colorless complex ion agcn-2 which has a formation constant kf21020
calculate the force of gravity on a 6929-kg mass at the earths surface the mass of the earth is 6e24 kg and the its
mgoh2 is a sparingly soluble salt with a solubility product ksp of 56110-11 it is used to control the ph and provide
a gas is enclosed in a container fitted with a piston of cross-sectional area 0150 m2 the pressure of the gas is
the final temperature of a mixture of solution prepared by dissolving 250 gram of naoh in 750 ml of water both
the outer wall of a building is constructed from concrete blocks if the wall is 50 m long at 20 degrees celcius how
how are moles masses and volumes of gases calculated from one another for a gas at
a 26 block of aluminum sits on the bottom of a tank of waterpart a how much force does the block exert on the bottom of
potassium hydroxide is used to precipitate each of the cations from their respective solution determine the minimum