Which of the following is the geometry at the carbon atom of an aldehyde or ketone?
A) linear
B) tetrahedral
C) trigonal planar
D) square planar
C
Environmental & Atmospheric Sciences
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In a battery, if the following oxidation-reduction reactions takes place normally:Mn2O3 + ZnO ? 2 MnO2 + Zn What reaction would be taking place if you were charging the battery?
A. ZnO ? Zn B. 2 MnO2 + Zn ? Mn2O3 + ZnO C. Mn2O3 ? MnO2 D. all of the above E. none of the above
Environmental & Atmospheric Sciences
Which region has the largest percentage of its population living in urban regions?
A) North America B) Latin America C) Europe D) Asia E) Africa
Environmental & Atmospheric Sciences
What is the single greatest advancement in tools used for observing tropical cyclones?
A) radar B) aircraft reconnaissance C) data buoys D) meteorological satellites
Environmental & Atmospheric Sciences
How much pollution in Mexico City is generated by vehicles?
A) 35% B) 50% C) 60% D) 75% E) 90%
Environmental & Atmospheric Sciences