How many molecules of oxygen are needed to completely react with 0.44 moles of phosphorus? 4 P + 5 O2 -> 2 P2O5

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)

The reaction will shift to the right