O C.
Before
2 CH₂ + 40₂
2 CO₂ + 4H₂O
The chemical reaction shown above takes place in a closed system. What is true about the system while the reaction occurs?
OA. The total number of particles in the system increases.
OB.
The total mass of the particles in the system increases.
The total number of particles in the system decreases.
The total mass of the particles in the system stays the same.
OD.
After
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