Answer:
The correct answer is -
A (the entire green box): Chemical Equation
B (the blue box): Reactants
C (the arrow): Reacts to Form
D (the number): Coefficient
E (the purple box): Products
Explanation:
The chemical reaction of burning methane and oxygen is as follows;
Here, the green part A is the chemical equation that includes various parts that are reactants B, methane, and oxygen, C is an arrow that indicates the formation of products.
2 is here coefficient that indicates the moles of the oxygen which forms carbon dioxide and water in box E is products
The answer is B. darker; cooler
the dark spots give off less energy then the rest of the sun.
Hope this helps
Answer: 
Explanation:
We have the following equation:

We have to find
this means we have to isolate it:


Answer:
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior.
Explanation: