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Regard as the unbalanced redox reaction:
Cr2 O72- (aq) + Cu(s)→Cr3+ (aq) + Cu2+
Balance the equation in acidic solution and find out how much of a 0.850 M K2 Cr2 O7 solution is required to completely dissolve 5.25 g of Cu.
solution of the monoprotic acid HBr is titrated, and 85.00 mL of 0.59M NaOH is required to reach the equivalence point. What is the original concentration of the acid solution?
draw the valid lewis structures of polyatomic ions in bro4-. determine the number of resonance forms for each structure
In a 50.0 L container, 4.00 moles of chlorine and 2.00 moles of bromine are placed and kept at 293.0 K until equilibrium is reached. At equilibrium there are 82.63 g of Br2
an unknown carbohydrate compound has the empirical formula ch2o. a solution consisting of 0.515 g of the carbohydrate
Calculate the concentrations of hydroxide and hydronium ions in a solution prepared by dissolving 0.308 g of solid NaOH in enough water to make 225 mL of solution. Kw = 1.0E-14. Hydroxide ion concentration
What spectral features (including carbon spectra, proton spectra, IR spectra and mass spectra) allow you to differeintiate the product (acetanilide) from the starting material (aniline)
Compute the molarity of an acetic acid solution if 34.57 mL of these solutions are needed to neutralize 25.19 mL of 0.1025 M sodium hydroxide.
container it was heated to 800K, and at equilibrium the pressure of CO ws found to be .497 atm. Calculate the equilibrium constant Kp for the reaction.
An evaluation of R was performed, following the procedure described in this module. The barometric pressure was 736 torr, the temperature was 295k and volume of hydrogen gas collected was 35.6 mL. The calculated value of R was 82.1 mL atm K^-1 mol..
Explain which of the following structural features of amino acids is most responsible for differences in properties of proteins
Will a precipitate form when 20.0mL of Pb(NO3)2(aq) with a concentration of 2.50x10-4 mol/L is reacted with 45.0mL of CaCl2(aq) with a concentration of 1.25x10-3 mol/L
331 mg of an unknown acid was titrated with 0.110 m sodium hydroxide. the equivalence point is at 25.00 ml. what is
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