Chất nào sau đây là đồng đẳng của ankan:
A. c2h6
B. c6h10
C. c6h14
B. c5h10

1. and 2. question: in which equation? or i don't understand you, 3. a), 4. c), 5. c), 6. b), 7. d), 8. d) if small number is underlined(behind symbol) , b) if big number is underlined(in front of symbol)9. what is underlined there? 10. c)

It was necessary to redeem the world and he knew that his son was the only way

What? i don’t understand