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Ultra-high-vacuum experiments are routinely performed at a total pressure of 1.0 x 10-10 torr. Calculate the mean free path of N2 molecules and the binary number of collisions, Z11, of N2 molecules (per liter per second) at 350 K under these conditions. The collision diameter of N2 is 3.75 Å.
An aluminum engine block has a volume of 4.77 L and a mass of 12.88 kg .What is the density of the aluminum in grams per cubic centimeter?
10.00 mL of the final acid solution with excess barium chloride to produce a precipitate of barium sulfate (FW=2.33g/mol). The dry solid weighs 0.397 g.
When 4.220 g of calcium hydroxide is reacted with a 30.0 mL of a 0.200 M sulfuric acid solution how many grams of calcium sulfate and water are formed?
Comment of the effectiveness of targeted prodrugs such as Xeloda for specific cancers such as liver tumors, as well as their effectiveness as a broad "cure for cancer
Determine if the following reactions will form a precipitate when mixed. If one is formed, write the BALANCED formula unit, the COMPLETE IONIC, and NET IONIC equations. If a precipitate doesn't form, write NR for no reaction
Compute the Ka for the acid if the pH of the resulting solution = 6.36. and determine the pH of the resulting buffer
In what ways might the one(s) that does (do) not have a metabolic energy source (caffeine) provide the perception of increased energy after consumption?
What product will be obtained if you evaporated the water from NaOH extracts prior
How much heat is evolved when 243 g of ammonia gas condenses to a liquid at its boiling point?
Consider two DNA molecules: one 400 base pairs long, the other 800 base pairs long. Assuming that each is a rigid rod of diameter 25 Å, with a length of 3.4 Å per base pai.
A solution that contains 87.2g of an unknown compound in 392.4g of water freezes at -8.00 degrees C. Calculate the molar mass(in units of g/mol) of the solute. Kf of water is 1.86 degrees C/m.
What is the rate law for step 1 of this reaction? ((Express your answer in standard Mastering Chemistry notation.
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