Question

Balance the following equations (with steps and explanation)
1. N 2 +O 2 = N 2 O 5
2. Zn+HNO 3 = Zn(NO 3 ) 2 +H 2
3. Al+ O 2 = Al 2 O 3
4. Na + H 2 O = NaOH + H 2
5. Na 2 O + H 2 O = NaOH
6. Na + Cl 2 = NaCl
7. CH 4 + O 2 = CO 2 +H 2 O
8. Ca(OH) 2 + HCl = CaCl 2 + H 2 O

Answer 1

Answer:

I don't understand 4 number question