The change in frequency of a wave acceleration

Compare and contrast physical changes with chemical changes.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

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.