I’d say A. They are theoretical in the fact that they have not been observed directly, but have been confirmed to exist through experimentation.
X is dependent Y is independent.... number of students is Y flavor is X
Answer:
2 H⁺ + 2e = H₂ ( reduction )
Explanation:
Fe( s ) + 2 CH₃COOH = Fe ( OOCCH₃ ) ₂ + H₂
Fe( s ) = Fe⁺² + 2e ( oxidation )
2 H⁺ + 2e = H₂ ( reduction )