What is the formula for copper oxide and carbon

2 CuO (s) + C (s) -> Cu (s) + CO2 (g) Im not sure if that's it but yeah

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)

Change in speed or direction : )