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Krypton crystallizes as a fcc (face centered cubic unit cell) having an edge length of 559 pm.(a.)What is the density of solid Krypton?(b.) What is the atomic radius of a krypton atom?(c.)What is the volume of one krypton atom?
Potassium crystallizes in a bcc (body centered cubic unit cell) structure. The atomic radius of potassium is 235 pm. Determine:(a.) the number of atoms of potassium per unit cell, and(b.) The length of a side of this unit cell.
Draw a pressure temperature curve for Sulfur Dioxide. Detail the areas where the material exists as solid, liquid, and as a gas. Explain what is meant by critical point, triple point, and critical temperature
Compute the changes in the degree of polymerisation and the rate of the polymerisation caused by raising the temperature of polymerisation of styrene in C6H6, initiated by azobisisobutyronitrile from 60 0C to 70 0C.
find out the ΔH rxn for the given reaction as C 3 H 4 (g) + 2 H 2 (g) → C 3 H 8 (g)
1) Draw all aldehyde and ketone isomers of C 6 H 12 O. 2) What is the reaction that occurs with hexanal and propanol (give both the hemiacetal and acetal products)?
Determine the new equilibrium concentration of hydrogen, if the hydrogen concentration is raised by 0.299 M?
How much heat energy, is needed to convert 64.0 grams of ice at -18.0 degrees celcius to H2O at the temperature of 25.0 degrees celcius? Express your answers in kilojoules
Write down the electron configurations for C2 and F2. What is the bond order for each? Which one is likely to have larger bond dissociation energy.
Nuclear reactions is expressed in given reaction as 2/1H +2 /1H→3/2He + ? ; 233/92U+1/0n→133/51Sb+98/41Nb+?1/0n
Understanding of chemistry basics - which of the following is not changed by the activity of an enzyme during a chemical reaction?
Sodium methoxide CH3ONa is a weaker base than BuLi or nBuLi butyllithium. Recommend an explanation why it is not surprising to find that a weaker base is sufficient to prepare the Horner-Emmons-Wittig reagent.
A distance of 200 ft must be taped in a manner to ensure a standard deviation smaller than ± 0.03 ft. What must be the standard deviation per 100 ft tape length to achieve the desired precision?
One metric ton (1000 kg) of coal is required to produce 7.3 MW-hr of electrical energy. In 1993, the Thomas Hill power plant (a small, coal-fired plant supplying rural electric cooperatives) produced 7100000.0 MW-hr.
Write and balance the given chemical equation and Write a balanced equation for this reaction
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