2. What is the difference between a pure substance and a mixture?

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at

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.

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal