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A student determines the iron(II) content of a solution by first precipitating it as iron(II) hydroxide, and then decomposing the hydroxide to iron(II) oxide by heating. How many grams of iron(II) oxide should the student obtain if his solution contains 38.0 mL of 0.483 M iron(II) nitrate?
Draw all resonance structures for anisole to show why the methoxy group directs incoming electrophiles
What is the structure of the precipitate that forms after the sulfuric acid
mercury barometer with an inner diameter of 10.00 mm? Recall that the area of a circle is A = ? r2 and that 1 N = 1 kg m/s2.
Calculate the pH during the titration of 34.5 mL of 0.507 M triethylamine, (C2H5)3N with 0.148 M HCl after 13.0 mL of the acid have been added. Kb of triethylamine = 5.2 x 10-4.
the meta and para forms of phenylene diamine are used in the production of Kevlar and Nomex, respectively. Why is a corresponding material with similar properties not made from ortho-phynelene diamine
The falling down of a piece of chalk (when the hand holding it is taken off) is an energy-controlled process, because there is no change in its entropy in the process.
Volume of added base required to reach the equivalence point? State the pH at one half of the equivalence point
Explain why the wild horse analogy can be used to help explain a certain type of chemical bonding
The component of structure responsible for holding the 4 chains of hemoglobin together is a. primary
List the order of nucleotides in the DNA strand complementary to the section with the sequence [TTAGACGAC]. (2) How many codons does this represent?
Predict if the following conditions would result in the formation of a precipitate, explain briefly: a) 0.0025 M Fe 3+ at pH 6.00
Acetylene (C2H2) can be produced from the reaction of calcium carbide (CaC2) with water. Draw the localized electron orbital model (hybridized orbital model) for the acetylide anion (C22-), showing ?, ?, and lone pair electron orbital.
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