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calculate the molarity of a solution made by dissolving 0680 grams of na2so4 in enough water to form exactly 920 ml of
suppose that 500 ml of a 00500 m solution of pbno32 is mixed with 400 ml of a 0200 m solution of naio3 at 25degc
a gas sample in a piston container has a volume of 20 liters at 10 atm and 27 oc the temperature is changed such that
a sample of ammonia nh3 contains 33x1021 hydrogen atoms what is the mass of the sample in milligramsa 31b 16c 55d 33e
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a solution of 536 g of a molecular compound dissolved in 768 g benzene c6h6 and has a boiling point of 8146oc what is
radium-226 atomic mass 226025402 amu decays to radon-224 a radioactive gas with a half-life of 16x103 years what
sketch a heating curve for a substance x whose melting point is 40 degrees celcius and whose boiling point is 65
a 750 ml volume of 0200 m nh3 kb1810-5 is titrated with 0500 m calculate the ph after the addition of 250 ml of
a 520 ml volume of 035 m ch3cooh ka 1810-5 is titrated with 040 m naoh calculate the ph after the addition of 230 ml
how many grams of dry nh4cl need to be added to 150 l of a 0500 m solution of ammonia nh3to prepare a buffer solution
assuming that the formal charge on the central atom cant be larger than - 1 what is the number of important resonance
write balanced net ionic equations when the following compounds are mixed indicated mixtures where no reaction is
write balanced net ionic equations for the reactions expected when the following solutions are made moderately basic
a 40-year-old manager at a prominent legal firm in la experiences abdominal pain post lunch he goes to the restroom a
1 a solution is 025 m in each of the cations ba2 and ca2a what concentration of cro4-2 is needed to precipitate as much
discuss the trend in ion size within a family and a period and put a group of ions in order of increasing decreasing
in a hypothetical reaction leading to the formation of carbon dioxide it was found that at 150 seconds the
at what volume of added acid is the calculated by working an equilibrium problem based on the initial concentration and
a 10000 ml of a 0100m solution of fe2 in 1000 m h2so4 is titrated with a solution of 00200m of kmno4 - calculate a the
a voltaic cell consists of an mnmn2 half-cell and a pbpb2 half-cell calculate pb2 when mn2 is 11 m and ecell 035 v how
compare the molar solubility of agoh in pure water with that in a solution buffered at ph 700 note the difference
the b4o5oh42- ion present in 50 ml of a saturated na2b4o5oh4 solution at a measured temperature is titrated to the
car manufacturers are developing engines that use h2 as fuel in iceland sweden and other parts of scandinavia where
a sample of solid ammonium sulfide nh42s is placed in a closed bulb which is then filled with 00150 mol of inert he gas