Answer:
The process of the formation of coal and oil is a very gradual and slow process.
Explanation:
The process of the formation of coal and oil is a very gradual process that takes up to millions of years.
Answer:
1.25 moles
Explanation:
First, we need to balance the equation. Essentially, this means making sure we have the same number of each atom on each side.
On the left side, we currently have:
- 1 Co atom
- 2 F aomts
On the right side, we have:
- 1 Co atom
- 3 F atoms
To balance it, add a 2 to Co on the left, 3 to F2 on the left, and 2 to CoF3 on the right:
→ 
Now, we have 1.25 moles of Co, and since the ratio between Co and CoF3 is 1:1, we also have 1.25 moles of CoF3.
Thus, the answer is 1.25 moles.
Columns represent groups from the periodic table. Groups share the same number of valence electrons, which are the electrons located in the outer orbital.