How many valence electrons are present in a Rh atom?
A) 2
B) 7
C) 9
D) none of these
C
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Which of the following is a type of migration?
A. reluctant migration B. voluntary migration C. forced migration D. all of these
Most tornadoes have winds that are ____
A) greater than 500 knots B) greater than 220 knots C) between 125 and 220 knots D) less than 125 knots
How was the geologic time scale developed?
A. By systematically dividing all of earth history into equally spaced time intervals, similar to the hours and minutes on a clock. B. By compiling Biblical and historical records to reconstruct Earth's history. C. By radiometrically dating successive intervals in rock layers. D. By correlating exposed rock sections from around the world. E. All of the answers listed here.
Use Figure 6.18 to determine whether andalusite, kyanite, or sillimanite is stable under the following pressure (P) and temperature (T) conditions:
? P = 1 kb, T = 500 °C ? P = 2 kb, T = 650 °C ? P = 4 kb, T = 450 °C ? P = 5 kb, T = 650 °C What will be an ideal response?