Which unit is used for measuring atomic mass?

A__ is two or more substances that are together in the same place but are not chemically combined

What are the chemical names of these compounds? ke: mg3n2: reset next

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.