Which of the following reagents was used in the original breath alcohol test used by law enforcement officials?

A) Cr3+
B) hydrogen peroxide
C) potassium dichromate
D) none of these


C

Environmental & Atmospheric Sciences

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Suppose the wind speed increases from 8 km/h to 40 km/h. Which of the following expresses the factor by which the force of the wind will have increased?

A. 2 B. 4 C. 5 D. 25

Environmental & Atmospheric Sciences

Which of the following countries of Southwest Asia and North Africa has the most diversified economy, and is not reliant on oil?

A) Qatar B) Kuwait C) United Arab Emirates D) Saudi Arabia E) Turkey

Environmental & Atmospheric Sciences

Explain the difference between the terms silicon and silicate

What will be an ideal response?

Environmental & Atmospheric Sciences

In a hilly region, the best place to plant crops that are sensitive to low temperatures is

a. ?on the valley floor. b. ?along the hillsides. c. ?on the top of the highest hill. d. ?in any dry location. e. ?near streams and rivers.

Environmental & Atmospheric Sciences