NEED HELP. BRAINLIEST FOR BEST ANSWER!

NEED HELP BRAINLIEST FOR BEST ANSWER class=

Answer :

Answer:

1. 2 H2 1 O2 and 2 H2O

2. 2 THEN 2

3 1 THEN 2

4. 2 THEN 7 THEN 4 THEN 6

5. 1 THEN 1 THEN 1 THEN 2

Explanation: