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draw a neat lewis structure for each of the following compounds make sure your diagram clearly distinguishes the type
a fish tank containing a number of exotic fish needs a ph of 50 an indicator indicates the ph of the tank is 70 what
the pka of phosphoric acid is 721 what is the useful buffering range of this acid and its conjugate base briefly
what opportunities can teachers provide for students to use technology in elementary science classes to help them learn
in your opinion which of the separation technologies in use today would qualify to be classified as best in class state
what would the volume of gas be if it were formed at high-altitude laboratory where the temperature was 15c and the
what is the molar concentration of a solution that contains 165 g of sodium sulphate dissolved in 300 l of
if i have an equivalence point of 1025 ml where there is a ph of 811 how would i determine the moles of hoac in a 25 ml
a 04283 g sample of kio3 is transferred to a 250 ml volumetric flask dissolved and diluted to the mark with distilled
a 25 ml aliquot of 00104 m kio3 solution is titrated to the stoichiometric point with 1727 ml of sodium thiosulfate
give the expected cnmr values of each carbon in the molecule n-3-biphenylylacetamide show which value corresponds with
sketch the molecule n-3-biphenylylacetamide rank the carbons from highest ppm to lowest ppm as would be shown on a
make a sketch of the molecule n-3-biphenylylacetamide rank the protons from highest ppm to lowest ppm as they would
at a given temperature the average velocity of the molecules in a sample of oxygen is found to be 150 msec what is the
a 105 l cylinder contains a sample of gas at 145 atm what pressure would the gas be in at 73 l cylinder at this same
a student runs the reaction below with 153 ml of 0579 m sulfuric acid if the sodium hydroxide is 0280 m how many
if the enthalpy change for the reaction below is delta h 198kj how many grams of sulfur dioxide are produced when 804
what impact would adding twice as much na2co3 than required for stoichiometric quantities have on the quantity of
consider a hydrolysis reaction that breaks down the hypothetical compound qrqr h2o rarr hq rohthe free energy under
initial cacl2bull2h2o gnbsp1 gram nbspnbspnbspinitial cacl2bull2h2o molesnbspnbsp0068 molesnbspnbspinitial
question world war i please respond to the following note please respond to one 1 of the following two 2 bulleted items
if i found an experimental value for the change in oxidation state for clo3- to be 5 what would the balanced oxidation
part a a radio stations channel such as 1007 fm or 923 fm is actually its frequency in megahertz mhz where 1 mhz
question this must be at least 100 wordswhat had the greater impact on bringing the us out of the great depression
consider the following reduction potentialscd2aq 2e- cds edeg -040 vpb2aq 2e- pbs edeg -013 vcu2aq 2e- cus edeg