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Which reaction below represents the second ionization of Sr? A) Sr(g) rightarrow

ID: 522733 • Letter: W

Question

Which reaction below represents the second ionization of Sr? A) Sr(g) rightarrow Sr^+ (g) + e^- B) Sr (g) + e^- rightarrow Sr^2- (g) C) Sr (g) rightarrow Sr^2- (g) + e^- D) Sr^2 (g) + e rightarrow Sr (g) E) Sr (g) + e rightarrow Sr(g) Aluminum metal reacts with iron(II) sulfide to form aluminum sulfide and iron metal. What is the stoichiometric coefficient for aluminum when the chemical equation is balanced using the lowest, whole-number stoichiometric coefficients? A) 1 B) 2 C) 3 D) 4 Give the temperature and pressure at STP. A) 273K and 1.00 atm B) 25 degree C and 30.00 in Hg C) 0 degree C and 1 mm Hg D) 32K and 1 torr Hg E) 0 degree C and 1.00 atm Calculate the atomic mass of element "X", if it has 2 naturally occurring isotopes with the following masses and natural abundances: X-45 44.8776 amu 32.88% X-47 46.9443 amu 67.12% A) 46.26 amu B) 46.84 amu C) 45.91 amu D) 44.99 amu E) 46.34 amu Identify the color that has a length of 535 nm. A) blue B) yellow C) red D) green Calculate the mass (in ng) of 2.33 times 10^20 atoms of oxygen. A) 3.73 times 10^6 ng B) 2.25 times 10^3 ng C) 1.62 times 10^7 ng D) 4.69 times 10^7 ng E) 6.19 times 10^6 ng Which of the compounds of H CO_2 H, Ba(OH)_2, CsOH, and HBr, behave as acids when they dissolved in water? A) H CO_2H and HBr B) only HBr C) only CsOH D) Ba(OH)_2 and CsOH

Explanation / Answer

Sr(g) ----------> Sr+ (g) + e- (First ionization)

Sr+ (g) --------------> Sr+2 (g) + e- (second ionization)

So the answer is B

Thank you and good luck.

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