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1. If you had isolated ferrocene from diethyl ehter on the roto-evaporator, what would be the problem with leaving it under vacuum for an extended length of time to remove excess solvent?2. Why is it necessary to seal the capillary tube before taking a melting point of ferrocene?3. What is sublimation? How does sublimation differ from vaporization? How does sublimation differ from evaporation?4. Explain why the process of sublimation, as used in this lab, is analogous to distillation.5. Why is it necessary to "thoroughly" dry the container in which you perform the sublimation process?
The value of deltaH for the reaction CH3OH (l)---->CO (g) +2H2 (g) is +128.1 kJ. How many kJ of heat are consumed when 5.10 g of H2 (g) is formed as shown in the equation
question if 1.4 m h2so4 is used to titrate a 300.0 ml solution of 1.76 m ammonia nh3 what volume of acid is required to
The solubility product for ZnOH2 is 3.0x10^- 16. The formation constant for the hydroxo complex, Zn(OH)4 ^2-, is 4.6x 10^17. A)What is the minimum concentration of OH - required to dissolve 1.5×10-2 mol of Zn(OH)2 in a liter of solution
What is the percent ionization of HA in 0.11 mol/L HA(aq) if HA is a weak acid with pKa=6.00. Enter your answer accurate to three significant figures
why is it easier to analyze a mixture of atomic species by absorption spectroscopy than it is to analyze a mixture of molecular species?
Consider the electronic configuration for Mn (Z=25): a.) Write the electron configuration in spdf notation. b.) Write the electron configuration in Noble-gas-core-abbreviated notation.
What is the molar mass of the unknown acid? B) As the acid is titrated, the pH of the solution after the addition of 15.00mL of the base is 9.46. What is the Ka for the acid?
Methane, CH4, the major component of natural gas burns in air to form CO2 and H2O. What mass of water is formed in the complete combustion of 5.00 ´ 103 g of CH4
Suppose 50 mL of 0.250 M CoCl2 solution is added to 25.0 mL of 0.350 M NiCl2 solution. Calculate the concentration, in moles per liter, of each of the ions present after mixing.
Derive the activation energy for a reaction that proceeds 2 times faster when the temperature is raised from 20 C to 30 C. (show all work)
a 0.10 m solution of lactic acid a weak monoprotic acid of fromulahc3h5o3 was found to have a ph of2.43. what is the
Using the equilibrium constant given for the reaction below, calculate the equilibrium constant for the following reaction: 3SO3(g) + 3NO(g) = 3SO2(g) + 3NO2(g) Kc=?
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