In the reaction Pb(s) + 2 Ag+(aq) ? Pb2+(aq) + 2 Ag(s) which species is the oxidizing agent?

A) Pb(s)
B) Ag+(aq)
C) Pb2+(aq)
D) Ag(s)


B

Environmental & Atmospheric Sciences

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The daily (diurnal) range of temperature is greatest next to the ____________________

Fill in the blank with correct word. Considering each hemisphere as a whole, seasonal temperature variation in the Southern Hemisphere is ____________________ that in the Northern Hemisphere. Fill in the blank with correct word.

Environmental & Atmospheric Sciences

If the concentration of carbon dioxide in the atmosphere increases, Earth's average global temperature will

A) increase. B) decrease. C) stay the same. D) fluctuate wildly.

Environmental & Atmospheric Sciences

Which of the following would exhibit primary succession?

a. rock exposed by a retreating glacier b. an abandoned farm c. a forest that has been clear-cut d. newly flooded land to create a reservoir e. a forest that has been burned

Environmental & Atmospheric Sciences

When food is irradiated with gamma rays from a cobalt-60 source, does the food become radioactive? Why?

A. No. The gamma rays do not have sufficient energy to initiate the nuclear reaction in the atoms of the food. B. Yes and No. Although the gamma rays initiate the nuclear reaction, the radioactivity does not show up until the food is ingested. C. Yes. This is why irradiation with cobalt-60 is no longer approved by the FDA. D. Yes. However, the radioactivity resulting is well below the danger level established by the FDA.

Environmental & Atmospheric Sciences