To identify minerals
Each material chemical makeup are a variety of chemical compounds which has each own category. They have different functional groups which helps people identify which material they look for. For instance, hydroxyl group has chemical makeup of alcohol
Answer:
Reactants
Explanation:
"Starting chemicals", the substances present before a reaction occurs, are called reactants.
The results of the reaction are called products, which you would also have 15.0g.
The Answer you're looking for here is Star A mainly because it's the star with the highest Surface Temperature on the Graph.
Answer:
Gravity
Correct me, if I am wrong :)