The toxic gas hydrogen cyanide has the formula HCN. How many electrons must be shown in the Lewis structure of hydrogen cyanide?
A) 2
B) 6
C) 10
D) 12
C
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The Italian city of ________ is trying to save itself from slow subsidence and sea level rise.
A. Florence B. Pisa C. Rome D. Turin E. Venice
What is the speed in meters per second of a deep water wave with a wavelength of 5 meters?
A) 1.79 meters per second B) 2.8 meters per second C) 3.49 meters per second D) 7.8 meters per second E) 11.45 meters per second
Soils that form on granite in Arizona are different from soils that form on granite in Virginia because
____________________ is different Fill in the blank(s) with the appropriate word(s).
In regard to ocean salinity, temperature, and density
A. heavy tropical rainfall increases salinity and decreases density. B. ice formation in polar zones decreases salinity and density. C. high evaporation in subtropical waters decreases salinity and increases density. D. ice formation in polar zones increases salinity and density.