The empirical formula is the simplest whole number ration that defines constituent atoms in a species. The molecular formula is always a multiple of the empirical formula.
Molecule Formula = 78.0 • g • mol ^ -1 = n(12.011 + 1.00794) • g • mol ^ -1
78
N = ——————————- = 6
12.011 + 1.00794
Molecular Formula = C6H6
The correct answer is forty-five (45) degrees Fahrenheit.
Raw Shell Eggs are received in 45 degrees fahrenheit refrigerators to prevent the yolks from drying out and to preserve their freshness. Raw Shell Eggs should be handled carefully, since they are fragile and one must also take precautions when handling raw eggs, since they may hold salmonella, but it is less likely to occur.
<span>Irwin Rosenstock developed this model. His research was used to show why so few people undertake preventative measures for diseases and illnesses. This model shows that people tend to think that they are healthier than they might be, so there is no need for them to get screenings or other types of treatment.</span>
Answer:
Our atmosphere (air) is comprised of 78% of nitrogen. However, this nitrogen is in its elementary state (N₂) and therefore is quite inactive, so the plants can not use it directly. Changing the elementary nitrogen into more reactive forms (NH₃, NO₂, HNO₃) is occurring through the process called nitrogen fixation. It is happening via two processes.
First one is physical nitrogen fixation. When some type of atmospheric physical energy (lightning bolt, for example) reacts with N₂, it splits it in two very reactive N atoms, enabling them to react with oxygen in order to form NO₂.
Second process is biological nitrogen fixation. It's done by bacteria, special bacteria living in the soil, able to use elementary nitrogen for its metabolical pathways resulting in production of ammonia, which can be used by plants. It's noteworthy that bacteria are responsible for about 90% of all nitrogen fixation.
When the number of phytoplankton drastically decreased, this would affect the entire food web.
Phytoplankton are plankton consisting of microscopic plants. They are the autotrophic components of the plankton community and a key part of oceans, seas and freshwater basin ecosystems.
