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When the following reaction is balanced with the lowest possible whole number coefficients, what is the coefficient in front of oxygen (O2)? C2H6 + O2 yields CO2 + H2O A) 2 B) 3 C) 5 D) 7
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Mar 22, 2019
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When the following reaction is balanced with the lowest possible whole number coefficients, what is the coefficient in front of oxygen (O2)?
C2H6 + O2 yields CO2 + H2O
A) 2
B) 3
C) 5
D) 7
Chemistry
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Flashburn
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1) Equation:
C2H6 + O2 → CO2 + H2O
2) Balanced equation: 2
C2H6 + 7O2 → 3CO2 + 6H2O
Proof
left side right side
Element
C 2*2 = 4 4
H 2*6 = 12 6*2 = 12
O 7*2 = 14 4*2+6 = 14
Then, the coefficient in front of O2 is 7.
Answer: option D) 7
Tomwanzek
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Mar 27, 2019
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