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how long would it take to count out 1 billion tiny invisible objects yes invisible from a bottle of these objects if
what is the ratio of the rate of effusion of ammonia nh3 to that of hydrogen chloride
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oxygen is prepared by heating potassium chlorate with manganese dioxide as a catalyst 2kclo3s2kcls302g how many grams
most gases are stored and transported at high pressures a common laboratory cylinder of methane has a volume of 490 l
in the reaction cdcuso4cdso4cu what is the reduction half reaction what is the reducing agent explain your
first prepare a stock solution that is 100 x 10-2 m in phosphate ion how many g of na3po4 would you add to a 100 ml
calculate the molarity of a solution prepared by diluting 3688 ml of 0284 m potassium chloride to 1500
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a 05118 g sample of caco3 is dissolved in 6 m hcl and the resulting solution is diluted to 250 ml in a volumetric
this compund has been measured to be 6847c and 547h the rest is oxygen what is the empirical formula specifically how
write the molecular and net ionic equations for the reaction in aqueous solution of sodium sulfide and sulfuric acid
an aqueous solution of iron iii chloride reacts with magnesium solid to give solid iron an aqueous magnesium chloride
assuming that the electrical conductivity of a fcc unit cell of copper depends on the path of electricity along cube
the equilibrium constant kc for the reaction shown below is 417 10-34 at 25degc 2 hclg reverse reaction arrow h2g cl2g
an element consists of 140 of an isotope with mass 203973 amu 2410 of an isotope with 2059745 amu 2210 of an isotope
if some of the product contained magnesium nitride rather than magnesium oxide would the experimental mg be higher or
1 peroxydisulfate ion oxidizes iodide ion to triiodide ion i3- the reaction is s2o82- aq 3i - aq 2so42- aq i3- aqif
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a radiometric dating technique uses the decay of u-238 to pb-206 the half-life for this process is 45 billion years to
in one trial of the standardization of a na2s2o3 solution a 1000 ml volume of 500times10-3 m kio3 is pipetted into a
what is the molarity of the acid of a mixture of 2000 ml hcl aq 1425 ml of 02030 m
a 0200 m solution of hcl is added to a solution containing 0150 moles of sodium phosphate na3po4 the resulting solution
a solution containing 500 ml of 01500 m c2h3cooh is titrated with 01500 m naoh what is the ph of the solution after the