Which of the following equations is balanced? a. 2Al2O3 > 3Al + 3O2
b. 3Al2O3 > 3Al + 2O2
c. 2Al2O3 > 4Al + 3O2
d. 2Al2O3 > Al + 3O2

c

Explanation:

The way to check which one is the correct one is to simply multiply and see if there are the same number of atoms in both sides for each element.

a. 2×2 atoms of Al ≠ 3×1 atoms of Al

2×3 atoms of O = 3×2 atoms of O

BOTH MUST BE EQUAL FOR IT TO BE ADJUSTED

b. 3×2 atoms of Al ≠ 3×1 atoms of Al

3×3 atoms of O ≠ 2×2 atoms of O

c. 2×2 atoms of Al = 4×1 atoms of Al

2×3 atoms of O = 3×2 atoms of O

BOTH ARE EQUAL, CORRECT ANSWER!!!

d. 2×2 atoms of Al ≠ 1×1 atoms of Al

2×3 atoms of O = 3×2 atoms of O

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

number of electrons for neutral cl