Two molecules that speed up or slow down a reaction are called the ( )and the ( )

What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?

What layer of the atmosphere is directly above the troposphere?

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.