Question 15 (3 points)
4Al+3O2--> + 2Al2O3
Which three statements are TRUE of the reactant Oxygen (O2) in the chemical equation above? Choose the 3 correct statements.
a
There are 3 molecules of oxygen in the above equation. Each molecule of oxygen has two oxygen atoms.
b
There are 2 molecules of oxygen in the above equation. Each molecule of oxygen has three oxygen atoms.
c
The 2 in 3O2 is a coefficient.
d
The 2 in 3O2 is a subscript.
e
The 3 in 3O2 is a coefficient.
f
The 3 in 3O2 is a subscript.
The three correct statements are:
a) There are 3 molecules of oxygen in the above equation. Each molecule of oxygen has two oxygen atoms.
c) The 2 in 3O2 is a coefficient.
e) The 3 in 3O2 is a coefficient.