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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
1 calculate the solubility of auoh3 in water ksp 55e-462 calculate the solubility of auoh3 in 11 m nitric acid
according to the henderson-hasselbalch equation how many grams of sodium acetate will you need to add to 125 ml of 0100
potassium hydroxide is used to precipitate each of the cations from their respective solution determine the minimum
a what is the ph to nearest 001 ph unit of a solution prepared by mixing 670 ml of 00755 m hbro and 890 ml of 0130 m
1 supply the missing reactant in the following nuclear reaction 10e 5926fe2 if 88 mg of iodine-123 is used in an
a 1000ml aliquot of a weak base is titrated with hcl the equivalence point is reached after 1721ml of 04332 moll hcl
549g of solid aluminum hydroxide aloh3 is neutralized with 919g of sulfuric acid h2so4a write a balanced equation of
cholesterol is a compound suspected of causing hardening of the arteries a 502 g sample of cholesterol was analyzed and
neglecting any effects caused by volume changes would you expect the ionic strength to 1 increase 2 decrease or 3
you are to prepare a buffer at a ph of 900 using 050 molliter hcn and 036 molliter nacn if you begin with 2500ml of 036
gaseous oxygen is held in 2 separate containers at identical temperature and pressure the volume of container a is 792
a sample of helium gas has a volume of 823 l at 2588 k and 2049 atm how many helium molecules does it
calculate the mass in grams of hydrogen chloride produced when 56 l of molecular hydrogen measured at stp react with an
calculate the decomposition for this process at constant pressure and 25o c caco3s caos
during the synthesis of methyl 3-nitrobenzoate when the reaction mixture is poured on ice the product separates out as
calculate the ph of 0300 l of a 0500 m nahso3 0300 m na2so3 buffer before and after the addition of the following
calculate the heats of combustion for the following reactions from the standard enthalpies of formations listed in
1 which solution is more acidic one with a ph of 60 or one with a poh of 92 a solution with a poh of 730 is expected to