Which chemical equation is balanced? ⚖️

French version 🇫🇷

Carbon combustion 🔥 Word equation:

Carbon + Dioxygen → Carbon dioxide
Chemical equations:
A) C + O2 → CO2
B) C + 2O2 → CO2
C) 2C + O2 → 2CO2

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 ×.

📊 RESULT:

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