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Explain which of the following represents the change in electronic configuration that is associated with the first ionization energy of magnesium? a. [Ne]3s13p1 ---> [Ne]3s1 + e- b. [Ne]3s2 ---> [Ne]3s13p1 c. [Ne]3s2 ---> [Ne]3s1 + e- d. [Ne]3s2 + e- ---> [Ne]3s23p1
ropes 3 m and 5 m in length are fastened to a holiday decoration that is suspended over a town square. the decoration
calculate the density of hydrogen bromide gas in grams per liter at 733 mmhg and 46 degress celsius.
Calculate the internal energy of He, Ne, and Ar under standard thermodynamic conditions. Do you need to redo the entire calculation
Write the rate law for this version of the iodine clock reaction. Could the rate law have been predicted using the coefficients in the balanced equation? Explain
We did TLC and column chromatography separating methylene blue and fluorescein. The solvent contained mostly ethanol but also had NaOH, and this NaOH formed SiO- with the silica (the stationary phase), which is in competition with the solvent for ..
Cobalt oxide, CoO, is a largely ionic compound. What coordination number and crystal structure would you expect for this oxide. Draw this structure
Rank the following hydrogen atom transitions in order of increasing energy of light produced ( from lowest energy light produced to highest energy light produced).
The density of Toluene (C7H8) is .867 g/mL, and the density o thiophene (C4H4S) is 1.065 g/mL. A solution is made by dissolving 10.5 g of thiophene in 250 mL of Toluene.
The heat of fusion of acetic acid, the principal organic component of vinegar, is 45.9 cal/g.How much heat (in kilocalories) is required to melt 3.65 mol of solid acetic acid
A substance has a molecular mass of 100g/mol. How many ug are in a 700mm3 volume of a 2mM solution?
State whether sulfuric acid is a strong or weak acid and write a fully balanced chemical equation for the dissociation of sulfuric acid in aqueous solution. Hence calculate the pH of a 2.2 x 1-^-3 mol dm^-3 aqueous solution of sulfuric acid.
Which of the following correctly shows intrachain hydrogen bonding in an alpha-helix. A. -NH HN- B. -C=O HC- C. -C=O HN- D. -C=O C- E. -CH HC-
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