What is a catalyst defined as? a. a substance that speeds up a reaction only b. a substance that speeds up a reaction, and is not used up c. a substance that speeds up a reaction, and is completely used up d. a substance that slows down a reaction, and is completely used up

Determine the empirical formula for succinic acid that is composed of 40.60% carbon, 5.18% hydrogen, and 54.22% oxygen.

In a copper wire, a temperature increase is the result of which of the following

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.