A solution of NaCl has a sodium ion concentration of 150. ppm. What is the chloride ion concentration in this solution?

A) 97.0 ppm
B) 150. ppm
C) 232 ppm
D) 300. ppm


C

Environmental & Atmospheric Sciences

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A graph of world population growth over the past 500 years most closely resembles the letter _______

A) M. B) U. C) S. D) J.

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A 10-kg block is pushed across a horizontal surface with a horizontal force of 20 N against a friction force of 10 N. The acceleration of the block in meters per second squared is

A) 1. B) 2. C) 5. D) 10. E) none of the above

Environmental & Atmospheric Sciences

Being open to all factors that might be involved in the solution to a problem, including human ones, is called a ____

a. simplistic approach b. experimental method c. holistic approach d. humanistic approach e. spatial technique

Environmental & Atmospheric Sciences

Which of the following is NOT a regional name for the most powerful tropical cyclones?

A) Cyclone B) Easterly wave C) Typhoon D) Hurricane

Environmental & Atmospheric Sciences