Answer:
Listen in Class. The first step to passing any test is to begin preparing right there in the classroom. ...
Review Lab and Lecture Notes. ...
Know the Vocabulary. ...
Develop a Study Schedule. ...
Take Advantage of Online Study Resources.
Explanation:
mr oxygen= 16. 16 x 3= 48
mr Al2O3= 27 + 27 + 48= 102
(48/102) X 100%= 47.05% oxygen
My Friday is going good and I might get to go over to my BFF house!!!