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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
a circuit consists on an emf of 48 v a resistor with r 80 ohms an inductor with l 20 h and a switch all connected in
the active ingredient of aspirin is acetylsalicylic acid a monoprotic with a ka 33 x 10 raised to -4 power what is the
given stock solutions of 3 m potassium acetate and 500 mm edta and a jar of solid tris powder molecular mass 121 gmol
two separate containers filled with nitrogen gas each contain 016 moles of gas container 1 has a volume of 0188 l at a
a weight lifter does a series of arm raises while holding a 750 kg weight her forearm including the hand starts out
a sealed tube 05 l in volume confines two moles of an ideal gas at a pressure of 2 atma what is the average kinetic
a traveling wave in a string of linear density 001 kg per meter is described by the wave function y 002 m sin50 radm x