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Describe amphoteric behavior and give an example of it other than the one given in your lab manual.
Explain why is it good to form only one precipitate when analyzing your unknowns?
Explain why is it important to perform the ammonia tests with no other sets of cations in the tray?
Explain whether it is True or False: Confirmatory tests should always be carried out initially on a known sample of cations..
If you add a silver ion solution to a carbonate ion solution a brown precipitate forms. Explain what can this precipitate be? Define possibilities and the way to determine what it actually is.
Create a 5-step procedure you think will work to compare the efficiency of the light emitted by an incandescent light bulb to a fluorescent light bulb.
While did the mammoth live. Presume that living organisms have a carbon-14 decay rate of 15.3 dis/min*g C as well as that carbon-14 has a half-life of 5730 yr.
Write a hypothetical inner-sphere redox mechanism for the reaction of [Cr(H2O)6]2+ with cis-[Co(NH2CH2CH2NH2)2I2]+ (aq) in acid solution to give (ultimately) cis-[Cr(H2O)4I2]+, Co2+(aq), and [NH3CH2CH2NH3]2+."
If a molecule having an ionization energy of 11.39 eV produces a photoelectron having a kinetic energy of 6.85656E-19 J, what is the wavelength of the incident radiation
Calculate the change in entropy when 5.0g of water at 75.2 degrees Celsius is converted to ice at -5.5 degrees Celsius. During the process the pressure remains constant at 1.00 atm.
What is the initial concentration (in M) when 15.3 mL of a potassium hydroxide solution was diluted with 15.1 mL of solvent to a final concentration of 0.561 M? Assume the volumes are additive.
A 50-lb weight hangs from a string. Find the tensions T1 at 50 degrees and T2 at 30 degrees in the string, and write these vectors in terms of the vectors i and j
Na3PO4+CaCl2 ---> Ca3(PO4)2+NaCl if 0.996 g of Na3PO4 are provided, how many grams of Ca3(PO4)2 should be formed?
At sea level (1.00 atm), .500 moles of F2 gas will occupy 8.51 L of space at what temperature in C? What would the temperature of the system be at 650 mm Hg, a typical mountain top air pressure
How many mmoles of HCl reacted with the Na2CO3? c. Calculate the molarity of the HCl solution.
Suppose you have a 250 mL glass bulb containing an unknown amount of PCl3 gas. If the bulb contains 1.5 atm of PCl3 at 25C
identify the following compound from its IR and proton NMR spectra. C5H6O: IR: 3300 (sharp), 2102, 1634 cm-1 NMR: ? 3.10 (1H, d, J = 1 Hz); ? 3.79 (3H, s); ? 4.52 (1H, doublet of doublets, J = 10 Hz and 1 Hz); ? 6.38 (1H, d, J = 10 Hz)
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