Consider the Reaction Between Acetylene, C₂H₂, and Oxygen in a Welding

question 14

Multiple Choice

Consider the reaction between acetylene, C₂H₂, and oxygen in a welding torch: 2C₂H₂(g) + 5O₂(g) $\rightarrow$ 4CO₂(g) + 2H₂O(g) Which of the following is not conserved in this reaction?

• A)atoms
• B)moles of atoms
• C)moles of molecules
• D)mass

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