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describe how to make a sodium formate hcoona formic acid hcooh buffer that has a ph of
a 100 ml sample of rainwater is neutralized by 224 ml of 0122 m naoh assuming that the acid present in sulfurous acid
a certain reaction is spontaneous at 134c if the enthalpy change for the reaction is 198 kjmol the minimum value of
a draw a lewis structure for cn- where the bonding occurs along the x-axis be sure to include all lone pairs and formal
in titration experiment 214 ml of 0987 moll formic acid is required to neutralize 174 ml of barium hydroxide the
the buffer solution consists of 01 moll of sodium acetate and 15 moll of acetic acid the ka of acetic acid is 18x10-5
a buffer solution consists of 15 moll of sodium acetate and 15 moll of acetic acid the ka of acetic acid is 18x10-5
the concentration of sodium cation in a 073 moll solution of sodium carbonate is which of the following note assume
the reaction between an antacid and a hydrochloric acid is given sodium hydrogen carbonate hydrochloric acid gives
the ka for hydrofluoric acid is 71x10-4 the percent ionization of hydrofluoric acid at a concentration is 043 moll is
the original molarity of a solution of formic acid with a ka of 17x10-4 its ph is 452 at equilibrium is
076 grams of acetic acid is solvated in enough water to make 50 ml of solution the ka for acetic acid is 18x10-5
compare and contrast the accuracy and precision of at least three types of measurements used in your
how old is a bottle of wine if the tritium 3h content is 25 that of a new wine the half-life of tritium is 125
the half-life of 90sr is 29 years what fraction of the atoms in a sample of 90sr would remain 175 years
compare and contrast the accuracy and precision of at least three types of measurements used in
in an electron microscope electrons are accelerated to great velocities calculate the wavelength of an electron
calculate the number of moles needed to provide 20g of glucose from a 60 glucose
between which of the following energy levels of the hydrogen atom is the energy difference the greatesta n 1 and n 2b
explain how society depends on the accuracy and precision of measurements for products sold by the retail industry such
explain how a detergent removes oil from a cloth when laundry is done include micelles in your discussion you may use
a solution contains 1694 mg of coso4 1550 gmol per milliliter calculatei the volume of 008640 m edta needed to titrate
air monitoring provides the following contaminant concentrations at the approximate center of a fire scene in which
if your sprinkeling salt on your food that is made of sodium and chloride and someone says thats a inorganic compound
the element x occurs naturally to the extent of 200 superscript 12x and 800 superscript 13x the atomic mass of x is