Given the unbalanced equation: al + o2 → al2o3
when this equation is completely balanced using smallest whole numbers, what is the sum of the coefficients?

1.

9
2.

7
3.

5
4.

4

Determine the empirical formula of a compound containing 40.6 grams of carbon, 5.1 grams of hydrogen, and 54.2 grams of oxygen. in an experiment, the molar mass of the compound was determined to be 118.084 g/mol. what is the molecular formula of the compound? for both questions, show your work or explain how you determined the formulas by giving specific values used in calculations.

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

The rules of engagement (roe) working group is often used to (select all that apply.)