What is the name for the following polyatomic ion?PO4-3
A. potassium
B. phosphorus oxide
C. trioxo phosphoride
D. phosphate
E. phosphinate
Answer: D
Environmental & Atmospheric Sciences
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A chunk of clay in outer space moves at 3 m/s and has an inelastic collision with a half-as-massive chunk initially at rest. Compared to the initial kinetic energy of the 3-m/s chunk, the kinetic energy of the coupled chunks is
A. two-thirds. B. one-third. C. three-quarters. D. not enough information
Environmental & Atmospheric Sciences
One-fifth of Earth's total fresh water supply is in ________
A) the ocean B) groundwater C) ponds D) the tundra E) estuaries
Environmental & Atmospheric Sciences
Trace the changing temperature of the atmosphere from Earth's surface to the top of the atmosphere
What will be an ideal response?
Environmental & Atmospheric Sciences
In the food chain clover ( mouse ( snake ( hawk, what is the hawk?
Environmental & Atmospheric Sciences