Answer to exercises

The reasoning here is similar to that for the answer to Exercise 35. In both cases, an... 

Reread excerpt 3A and reexamine your answers to exercise 3.2. How would you modify your responses so that they are more accurate Do you notice anything now that you did not notice earlier ... 

This is not unusual at all. As discussed in the answer to exercise 33, there is much overlap between the different sciences. While Baker is interested in how the chemicals produced by the sea butterfly may be used for some human purpose, McClintock is interested in how the sea butterfly uses this chemical in its own self-defense. Here we see two different approaches to the same phenomenon. Aside from learning from each other, studying the same system together allows these researchers to pool their research resources. 

As discussed in the answer to exercise 94, trees and other photosynthetic plants absorb atmospheric carbon dioxide in the summer, which causes a decrease in atmospheric CO, levels by the fall. During the winter, the plants lose their leaves and photosynthesis stops. The fall and winter decay of the organic matter generates carbon dioxide, which increases the atmospheric CO, levels by the spring. Most of the land mass of our planer is located in the northern hemisphere. Therefore, that s where most of the CO,-consuming photosynthesis from trees and plants takes place. 

As per the answer to exercise 40, heavier hydrocarbons have a greater proportion of carbon, which is why, on a gram-to-gram basis, they produce more carbon dioxide. Thus the claim that natural gas, CH4, is a cleaner-burning fuel. 

Laboratory analysis of a sample from the Summerland (Upper Washita-Fredericksburg) Field indicates a ratio of volume oil leaving the reservoir to volume of oil arriving at the stock tank of 1.10 res bbl/STB. Does this information confirm your answer to Exercise 5-3 Why or why not ... 

Suppose that the standard calomel electrode used in Exercise 12.53 was replaced by a saturated calomel electrode (the solution is saturated with KC1). How will this change affect the answers to Exercise 12.53 The solubility of KC1 is 35 g in 100 mL HzO. 

In the majority of its reactions, hydrogen acts as a reducing agent, like the alkali metals. However, as described in the text and in the answer to Exercise 14.79, it may also act as an oxidizing agent, like the halogens. Consequently, H2 will oxidize elements with... 

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