Which of the following best summarizes photosynthesis?

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.