Answer: 2Li₂Se(s) + SO₂(g) → SSe₂(g) + 2Li₂O(s)
Explanation:
Reactant sides:
Li- 4
Se- 2
S- 1
O- 2
Product Side:
Li- 4
Se- 2
S- 1
O- 2
In order to balance an equation, you have to take in account of the number of each on both sides. This means changing the coefficients in the number.
Important tips for balancing chemical equations:
Only change the numbers in front of compounds (the coefficients).
Never change the numbers after atoms (the subscripts).
The number of each atom on both sides of the equation must be the same for the equation to be balanced.