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the ph of a 0500 solution of an aqueous weak acid ha is 230 calculate the ka for the weak
on a plot it shows the absorbance of a cuno33 solution increased as it concentration increased do you think this
is it possible for a fluorescent material to emit radiation in the ultraviolet region after absorbing visible
you order two primary standards of ultra pure k2so4 174260 gmol and na2so4 142043 gmol for an experiment when they are
three solutions are mixed together to form a single solution one contains 02 mole agc2h3o2 the second contains 04 mol
the specific heat capacities for all chemicals in the reactor considered at the beginning of this problem are given
identities of the components in a mixture may be determined by a technique called spiking suppose you had run a gas
a student needs to analyze a mixture containing a alcohol and a keytone by silica gel tlc suggest a likely developing
write a chemical equation that illustrates each of the followinga an aqueous solution of ammonia is basicb an aqueous
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calculate the difference in slope of the chemical potential against temperature on either side of a the normal freezing
a steel alloy to be used for a spring application must have a modulus of resilience of at least 207 mpa 300 psi what
suppose you are given a cuvette containing a cuno32 souliton of unkown concentration and you are asked to analyze it
the standard molar heat of formation of water is -2858 kjmol calculate the change in energy required in making 500 ml
conversion of 090 g of liquid water to steam at 100 degrees celsius requires 20 kj of heat calculate the molar enthalpy
to analyze the cuno32 in an experiment we constructed a plot of absorbance vs concentratio commonly called a
markonikovs rule provides for a great foundation in organic synthesis in your own words please state the rule and
react cis-2-butene with o3 in the presence of a zn catalyst what product or products are formed draw the product or
by differentiation of the 2s radial wavefunction show that it has two extrema in its amplitude and locate
an irregulary shaped metal object has a mss of 2873 g it is lowered int a 100-ml graduated cylinder that contains 352
electrolysis of molten nacl in a downs cell is the major isolation step in the production of sodium metal suppose 246 g
electrolysis of molten mgcl2 is the final production step in the isolation of magnesium from seawater assuming that 308
calculate the internal energy amd ethalpy changes that occur when air is changed from an initial state of 40 0f and 10