Question

Which chemical equation is unbalanced?

1. C + O --> CO2
2. Sr + O2 --> 2SrO
3. 6H2 + 3O2 --> 6H2O
4. H2 + H2 + O2 --> H2O + H2O

Answer 1

Step-by-step explanation:

1.c+o----->co2

And

2.sr+o2--->2sro

I hope this helps