Consider a reaction such as A2(g) + B2 (g) ? 2AB(g). What can we say about the mechanism of the reaction?
A) If the reaction is fast it occurs in a single step.
B) If the reaction is fast it occurs in multiple steps.
C) If the reaction is slow it occurs in multiple steps.
D) We must examine each case individually.
D
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When you step off a bus moving at 3 m/s, your horizontal speed when meeting the ground is
A. about 3 m/s. B. zero. C. less than 3 m/s but greater than zero. D. greater than 3 m/s.
A line-in-polygon operation produces a line layer, which typically has more records (features) than the input line layer. Why?
What will be an ideal response?
________ are tiny "seed" particles created when small sediments or shell fragments are rolled by waves in water supersaturated with calcium carbonate
A) Bryozoans B) Cave pearls C) Ooids D) Nodules
Climates in the past were much the same as they are today
Indicate whether the statement is true or false