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Analyze the sublimation of the crude naphthalene when the crude naphthalene was placed in a 25mL filter flask. The neoprene adapter was used to suspend a centrifuge tube filled with the ice over the solid in the flask, and the naphthalene will be warm by using a low setting on the hot place? (Relate to melting point)
Glucose is much more soluble in water than 1-hexanol even though both have 6 carbons. Explain
HCl solution to reach the methyl red endpoint. Calculate the weight percent NH3 in the aqueous water
Explain A solution containing 27.55 mg of an unknown protein per 25.0 mL of solution was found to have an osmotic pressure of 3.22 torr at 25.0oC. Define what is the molar mass of the protein
The Ksp for Al(OH)3 is 2 x 10-32. At what pH will a 0.2 M Al3+ solution begin to show precipitation of Al(OH)3.
If Delta H = -80.0 KJ and Delta S = -0.200 KJ/K, the reaction is spontaneous below a certain temperature. Calculate that temperature.
At 25 °C and 765 Torr, carbon dioxide has a solubility of 0.0342 M in water. What is its solubility at 25 °C and 1470 Torr
You are asked to prepare a buffer with a pH of 4.04. calculate the volumes of 1.00M solutions of formic acid (HCOOH) and sodium formate (NaHCOO) needed to produce 200mL of the buffer
Describe and explain how each of the following experimental errors or variations might affect your results. a) you failed to dry the reaction flask after washing it with water.
Draw the following protein molecule, Need to draw the following molecule (using the lewis condensed line structure).
Predict the major organic product formed when 1-bromobutane undergoes a SN2 reaction with EtONa.
For a certain glass electrode, the selectivity coefficient for Na+ relative to H+ is 1.0 x 10-12. The electrode is calibrated with NBS standard buffers 6.86 and 9.18,
A 100. mL sample of water is taken from the pacific ocean, and the water is allowed to evaporate. the salts that remain (mostly from NaCl) have a mass of 3.85g. Calculate the original concentration of NaCl, in ppm, in the water sample.
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