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Calculate the oxidation number (charge) of ONLY the atoms which are changing in the following redox equations and then show how they are used to balance the following redox equation.
Na2HAsO3 + KBrO3 + HCl → NaCl + KBr + H3AsO4
Define an attempt at synthesizing a certain optically active compound resulted in a mixture of its enantiomers. Suppose the mixture had an observed specific rotation of 16.5°. If it is known that the specific rotation of the R enantiomer is -31.1°..
If the volume of blood in an adult is 5.0L, what is the mass of HCI that the buffer can neutralize before the pH falls below 7.0
C12H10, is a nonvolatile, non-ionizing solute that is soluble in benzene, C6H6. At 25 degrees celcius, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 13.7 g of biphenyl in 34.6 g of..
Problem- if a solution contain a mixture of Ba^2 and Ag^+ ions, write a short experimental procedure that would allow the two ions to be separated and includes a confirmatory test for verifying the presence of each ion.
A volume of 40.0 of a 0.220 solution is titrated with 0.600 . Calculate the volume of required to reach the equivalence point.
At a given temperature, 1.18 atm of F2 and 5.91 atm of Br2 are mixed and allowed to come to equilibrium. The equilibrium pressure of BrF is found to be 1.044 atm. Calculate Kp for the reaction at this temperature. F2(g) + Br2(g) 2 BrF(g)
organic reactions can be classified as substitutions eliminations or additions and the reagents can be classified as
Calculate the concentration in ppm of K present in a solution prepared by dissolving 2.0 g of pure KNO3 and diluting to a volume of 1L
Consider the following equilibria for phosphoric acid. H3PO4 ? H+ + H2PO4- K1 = 7.11 x 10-3 H2PO4- ? H+ + HPO42- K2 = 6.34 x 10-8 HPO42- ? H+ + PO43- K3 = 4.22 x 10-13
Explain what is the pH of 355.0mL of an aqueous solution containing 0.607 g of the strong acid trifluoromethane sulfuric acid (CF3SO3H)
Gas Nitrous Oxide (N20) is used as an anesthetic and in aerosol cans to produce whipping cream. It is a potent greenhouse gas and decomposes slowly to N2 and O2.
For the cell diagram H2(g,1atm) ll Pt l Pt+ (g,1atm) answer the following questions. Enter part(a), (c) with 2 siginificant digits and part(b) with 3 siginificant digits. Enter scientific notation as 1.23E4. (a) What is Ecell if the unknown soluti..
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