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A certain metal crystallizes in a body-centered cubic arrangement. If it rearranges to a face-centered cubic structure, what will happen to the density of the metal?
increase because the packing is more efficient
decrease because the packing is more efficient
remain the same because the atoms do not change volume
decrease because the packing is less efficient
increase because the packing is less efficient
If the initial surface coverage is 8.9*10^16 molecules/cm^2, how long will it take for one-half of the film to evaporate? b. What fraction of the film is left after 10 s? Assume the same initial coverage as in part a.
In a hot flame, the emission intensities of the Sodium lines at 589 and 589.6nm are greater in a sample solution that contains KCl then when this compound is absent
One mole of sucrose weighs 342.3 grams. 1mol=6.02*10^23 molecules. Dietary fats (typically 18-20 carbons) contain about 9 dietary calories per gram. Assume all food consumed goes to making ATP
what is the percent yield for the reaction of 500. g of cs2 and excess o2 if 768. g of so2 was recovered in the
A particular calorimeter is calibrated and is found to have a calorimeter constant, Ccal = 3.640 kJ/°C. When 1.500 g of an unknown hydrocarbon was combusted in the calorimeter
The first step in industrial nitric acid production is the catalyzed oxidation of ammonia. Without a catalyst, a different reaction predominates: 4NH3(g) + 3O2(g) ? 2N2(g) + 6H2O(g) When 0.0280 mol gaseous NH3 and 0.0250 mol gaseous O2 are placed ..
You respond to a 2AM liquefied compressed gas transportation accident which is leaking from a 5lb (2.3kg) steel cylinder. Chemical commodity on shipping paper is 5 lb RQ, compressed gas, flammable, toxic, n.o.s. (poison - inhalation hazard, zone B..
What is the structure of the so-called Garner Aldehyde? Why is this compound a popular building block in the synthesis of more complex structures
Write a balanced chemical equation for the standard formation reaction of gaseous hydrogen cyanide
Consider a solution formed by mixing 61.0 mL of 0.100 M H2SO4, 26.0 mL of 0.100 M HOCl, 25.0 mL of 0.200 M NaOH, 25.0 mL of 0.100 M Ca(OH)2, and 10.0 mL of 0.150 M KOH.
As a food chemist for a major potato chip company, you are responsible for determining the salt content of new potato chip products for the packaging label. The potato chips are seasoned with table salt, NaCl.
What is the limiting reagent in this procedure? B. Based on your answer to part A, what mass of Fe(C5H5)2 could theoretically be formed? C. A student who carried out this reaction obtained 2.7 g of ferrocene. What was the percent yield for this re..
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