The coefficient for Oxygen in the balanced reaction : 3
<h3>Further explanation</h3>
Given
Reaction
C₂H₄ + _ _ O₂ ⇒ _ _ CO₂ + _ _ H₂O
Required
Oxygen coefficient
Solution
C₂H₄ + aO₂ ⇒ bCO₂ + cH₂O
C, left=2, right=b⇒b=2
H, left=4, right=2c⇒2c=4⇒c=2
O, left=2a, right=2b+c⇒2a=2b+c⇒2a=2.2+2⇒2a=6⇒a=3
The equation becomes :
C₂H₄ + 3O₂ ⇒ 2CO₂ + 2H₂O
If the strong force didn't exist, there would be nothing but hydrogen and neutrons floating in space. ... When the protons and neutrons are apart there is no strong force but when they are together to resemble a nucleus, the strong force is in action.
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The answer is 25g. Let me know if you need an explanation