Areaction has ? h? rxn= -129 kj and ? s? rxn= 301 j/k .

How much energy moves onto the next level, in an energy pyramid

Embryos of different species look very similar, which shows that the organisms share a ancestor.

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.