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compare the rate at which ph changes when hcl is added to the buffer solution the the rate of change when no buffer or
find the ph of a 020m solution of sodium propionate nac3h5o2 ka of propionic acid hc3h5o2 is 00000134 hint kwkakbfind
the drug zalcitabine also known as ddc is a weak base with the following molecular structure it has a pkb of 98 what is
to calibrate your calorimeter cup you first put 49 ml of cold water in the cup and measure its temperature to be
consider a buffer by dissolving 139 m sodium benzoate and 081 m benzoic acid in water and adjusting the final volume of
the vibrational parameters for h35cl are frequency 299095 cm-1 and vxe 52819 cm- 1 calculate the 35cl to 37cl isotope
a which ion cd2 or c2o4 -2 is present in solution at a greater concentration when you finish the titration in part bb
calculate the sodium ion concentration in a solution formed by diluting 35 ml of a 585 m sodium phosphate solution to a
if you trap 16 grams of oxygen gas over water at a temperature of 66oc in a container that is 269 liter what is the
the molar heats of fusion and vaporization of argon are 13 kjmol and 63 kjmol respectively and argons melting point and
hydarazoic acid hn3 is not a fun compound to work with not only does it have an irritating odor that is dan-gerous at
a certain liqid boils at 420 c its standard entropy of vaporization at that temperature is 894 j k -1mol -1 calculate
consider the ground state neutral anion and cation species of each of the following homonuclear diatomics in each case
a laser produces 200 mw of red light in 1 hour the laser emits 229 x 1020 photons what is the wavelength of the
the iodine molecule can be photodissociated into iodine atoms in the gas phase with light of wavelengths shorter than
how does ksp govern the dissolution of an insoluble solid determine the number of moles if io3- simply by knowing the
98 g of ethylene glycol c2h6o2 are dissolved in 715 g of water the freezing point constant kf of water is
an atomic emission spectrum of hydrogen shows three wave lengths 1875 nm 1282 nm 1093 nm assign these wavelengths to
how many unpaired electrons are present in the ground state of an atom from each of the following groupsa 8a18b 5a15c
write the balanced equations for the reaction between magnesium metal and hydrochloric acid solution and for the
calculate the pressure of a sample of gas collected over water at 25 degrees celsius if the atmospheric pressure id
when iron metal is added to a solution of a silver salt the iron goes into solution and the silver precipitates out
using the lewis structure predict the geometrical structures of the following ions and state the hybridization of the
if i put a lot of indicator would it affect the absorbance of a solution that only contains an acid and a base not a
the following compound has similar properties to aspirin write a synthesis for the preparation of the compound basing