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what are anode rays?.who discovered it?
what are the conclusions of anode ray experiment?
a has a partition coefficient of 3 between toluene and water with three times as much in the toluene phase. suppose
While a 0.3044-g sample of an unknown organic substance is similarly burned in the same calorimeter, the temperature raises by3.72 °C. Explain what is the energy of combustion per unit mass of the unknown substance
A compound has a C nmr spectrum with peaks at 7.4, 28.9, 36.4, and 208.8. The H nmr has peaks at 1.05 (t, .6), 2.13 (s, .58), 2.47 (q, .39). What is the compound?
viniger is made by adding 33 g of acetic acid to 625 g of water what is the percent by mass of acetic acid in the solution of viniger?
a 0.692 g sample of glucose c6h12o6 is burned in a constant volume bomb calorimeter. the temperature change is measured
a sample is a mixture of agno3 cucl2 and fecl3. when a 1.0000-g sample of the mixture is dissolved in water and reacted
What is the barium ion concentration in a saturated barium fluoride solution made by adding solid BaF2 until no more dissolved
a 1.750 g sample containing potassium hydrogen carbonate is decomposed by heating. if the mass loss is .271g, what is the percentage of KHCO3 in the unknown mixture
Determine the following characteristics of the titration curve for 20.0 mL of 0.20 m NH3(aq) tiltreated with 0.25 m HI(aq) A) The initial pH B) The volume of 0.30 M HI at the equivalence point c) The pH at the half equivalence point
Calculate the pressure of a sample of gas collated over at 25 degree celsius if the atmospheric pressure is 0.948 atm. 1 atm = 760 Hg
a molecule has an excited state electronic energy level that emits radiation of 1lambda 360 cm-1 when it falls to the
How many neighboring hydrogen atoms must the CH2 group (at 2.65 ppm H NMR ) of propyl amine see in order to have its signal split into a triplet
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