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the concentration of alcohol ch3ch2oh in blood called the blood alcohol concentration or bac is given in units of grams
a 100-ml solution of 510 m nh3 is titrated with a 170 m hcl solution calculate the ph after the following additions of
when a base is added to an acid they neutralize each other except when they make a ph of 7 in this case find the exact
which of the following redox reactions do you expect to occur spontaneously in the reverse directioncheck all that
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does anyone want to attempt to explain to me in very simple terms how to tell what chemical is acid and what is base in
ten seconds after the big bang the universe was composed of only protons neutrons electrons neutrinos antineutrinos and
write chemical equations and corresponding equilibrium expressions for each of the three ionization steps of phosphoric
given 1 liter h2o with a ph of 7 how much hcl mw of 365gmole needs to be added to lower the ph of the water to
a flask containins a mixture of heg and neg the total pressure of gas in the flask is 950 torr the mixture is 650 neg
given that an atom of a semiconductor has a diameter of 269 angstroms what is the maximum number of moles that fit in
fertilizer is made by mixing equal masses of potassium nitrate kno3 and ammonium phosphate nh43po4 what is the mass
the reaction between iron iii oxide and aluminum to produce aluminum oxide and iron has a heat of reaction deltah equal
the reaction between sodium metal and chlorine gas produces 822 kj of heat energy for chlorine molecule consumed 2 na s
1 if a mixture of argon and xenon have total pressure of 870 torr and the pressure of the argon is 539 torr what would
a gas at 550 torr and 12 liters is allowed to expand to 43 l what is the final pressure of the gas in mmhg or
a sytrofoam cup calorimeter is calibrated by adding heat to the water in it with an electrical heater when 1350j of
the reaction between nitrogen and oxygen gases requires the absorpotion of 43 kj of energy per mole of nitrogen
1 how many grams of salt would be in 1400 ml of a 105wtvol solution of the salt2 what would be pmm concentration of a
a 032-mol amount of nh3 is dissolved in 047l of a 038 m silver nitrate solution calculate the equilibrium concentration
a 100 ml sample of household ammonia solution required 1815 ml of 0320 m hci to reach neutralization calculatea the
if your given a 10l sample of water from a persons property who thinks there may be a significant level of pesticide in
if given the following cations list the order of elution from a cation exchange column explain why you chose the order
upon digestion and analysis of dna sample from animal tissue there are almost always equal amounts of purines and
youve been given a mixture of 2 compounds a and b which have been measured by spectrophotometry the wavelength of