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redraw the lewis structure using overlapping valence bonds enclosing pairs to show that carbon and nitrogen obey the
determine whether each five compounds naphthalene benzoic acid sodium benzoate ethly 4-aminobenzoate and ethly
a tartaric acid is composed of carbon hydrogen and oxygen a sample weighing 0400g is subjected to combustion analysis
write out a step by step extraction to separate mixture of toluene 4-methoxybenzoic acid and benzylamine into pure
freshly cut garlic contains allicin a compound responsible for the true garlic odor propose a short synthesis of
in normal breath about 05 l of air at 10 atm and 293 k is inhaled about 25 of the oxygen in air is absorbed by the
when given the reactants in a reaction and their concertration and the time it takes for the reaction to occur how do
name the kinds of attractive forces that must be overcome in order to do the following select all that applya boil
why are the bond angles for ch3ch2ch3 approx 109 degrees why is it tetrehedral when it has 10 electron
use the folowing data to calculate a the molar concentration of b in i water ii benzene b the molality of b in i water
predict which of the following liquids has greater surface tension ethanol c2h5oh or dimethyl ether
what is the absolute error in ml associated with a 25 ml burette and what is the relative error when a 325 ml volume
freon-12 ccl2f2is used as a refridgerant in airconditioners and as a propellant in aerosol cans calculate the number of
if 10 ml of 004m agno3 is added to 10 ml of 0024m k2cro4 is either ag or cro4 2- in stoichiometric excess if so which
a student mixes 50 ml of 100m h2so4 react with 100 ml 1 x 102 ml of 100m naoh in a calorimeter the temperature of both
a 1 gram sample of calcium was burned in chlorine to give a 195 g sample of pure cacl2 the energy given off in this
use simple structure and bonding models to account for why carbon carbon single bonds in ethane rotate freely while
what is the heat kcal released when 500 g of water at 100 degrees c hits the skin and cools to a body temperature of 37
why do ionic substances with higher lattice energies tend to be less soluable in water than those with lower lattice
use simple structure and bonding models to account for why xenon is capable of forming compounds like xef4 while argon
use simple structure and bonding models to account for why phosphorus forms 2 chlorides pcl3 and pcl5 while nitrogen
a compound has a pka of 74 to 100 ml of a 10m solution of this compound at ph 8 is added 30 ml of 10m hcl what is the
an aqueous solution of nacl freezes at -16 deg c at what temperature will it boil given that kb for water is 052 deg
consider a reaction in which two reactants make one product for example consider the unbalanced reaction a b c you
a nonvolatile organic compound z was used to make up two solutions solution a contains 500 g of z dissolved in 100 g of