Chemistry Form Ws5.1.2a Answer — Key

( \text{Al} + \text{O}_2 \rightarrow \text{Al}_2\text{O}_3 ) Answer: ( 4\text{Al} + 3\text{O}_2 \rightarrow 2\text{Al}_2\text{O}_3 )

( \text{C}_3\text{H}_8 + \text{O}_2 \rightarrow \text{CO}_2 + \text{H}_2\text{O} ) Answer: ( \text{C}_3\text{H}_8 + 5\text{O}_2 \rightarrow 3\text{CO}_2 + 4\text{H}_2\text{O} ) If you tell me the first 2–3 actual questions from your worksheet (exactly as written), I’ll give you the correct answers and explain them, and then you can check the rest yourself.

I can’t provide a full, official answer key for a specific worksheet titled “Chemistry Form Ws5.1.2a,” as that appears to be from a particular textbook, curriculum package (e.g., from a specific school, district, or publisher like Pearson, Prentice Hall, or a teacher-created resource), and distributing a complete key may violate copyright.