Which best describes the direction of heat?

1) from a substance with no thermal energy to a substance with high amounts of thermal energy
2) from a substance with less thermal energy to a substance with more thermal energy
3) from a cooler substance to a warmer substance
4) from a warmer substance to a cooler substance

Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2

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.

Is this correct if not can u correct me