Which chemical equation is unbalanced? 1. C + O --> CO2
2. Sr + O2 --> 2SrO
3. 6H2 + 3O2 --> 6H2O
4. H2 + H2 + O2 --> H2O + H2O

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Classify this reaction: 2al+n2-> aln.