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The Ksp for Cr(OH)3 is 1.6 x 10?30. What is the molar solubility of Cr(OH)3 in a buffer solution with a pH of 11.5? (Hint: what is the balanced reaction?) A) 5.0 x 10?23 B) 1.2 x 10?12 C) 1.6 x 10?14 D) 5.0 x 106 E) 5.0 x 10?17
the reaction of fluorine of 7.6 gramsnbsp with excess chlorinecl produced 3.3 grams of clf3. determine the percent
How many molecules of ethanol C2H5OH are present in 135 g of ethanol? The density of ethanol is 0.789 g/cm3?
when heated to a high temperature cyclobutane c4h8 decomposes to ethylene.c4h8g 2 c2h4gthe activation energy ea for
from the plots of the boiling point versus the volume of distillate in either of the fractional distillations of the ethanol-water mixture,what conclusion can you draw about the homogeneity of the distillate?
Considering the electron configuration of aluminum, 1s2s^22p^63s^23p^1, which of the following represents the valence electrons only:
What is ?, the electromotive efficiency to three significant figures?? Open the hint panel below for the definition of electromotive efficiency. (d) What is the pH of an unknown that gives a reading of 19.6 mV with this electrode at 30°C?
What is the internal energy (U) change of a system that emits 358 J of heat and receives 412 J of work
A piece of magnesium (mass=16.2 grams) reacts completely with 10.7 grams of oxygen. In the second reaction you have 61.4 grams of magnesium and 103.7 grams of oxygen
A 0.1000 m aqueous solution of a weak acid, HA, is 1.5% ionized. At what temperature does it freeze? Kf for water = 1.86°C/m.
For the analyte with pka= 5.6 and 60/40 acetonitrile/water eluent composition what should be the pH of an aqueous portion of the mobile phase to ensure complete ionization
Gas ammonia can be decomposed to give 3.00 by mass of hydrogen and 14.0 by mass of nitrogen.what mass of nitrogen is obtained.
Given that the present flux of anthropogenic Na+ into the oceans is 3.39 x 1012 mol yr-1, how long would it take to increase the concentration of Na+
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