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

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

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

How much pollution in Mexico City is generated by vehicles?

A) 35% B) 50% C) 60% D) 75% E) 90%

Environmental & Atmospheric Sciences