Hydrogen combustion 🔥 (or water synthesis 💧) Overall equation:
Hint 💡:
a) Write the calculations if the multiplication does not involve 1.
A red number (normal number) multiplied by a blue number (subscript number).
Example 1: 4 × 2 = 8
Example 2:
For 1 × 4 = 4, you may simply answer 4.
b) You may use the symbol * instead of the multiplication sign ×.