In an exothermic process, the initial heat content of the substance compared to the final is 1. Always lower
2. Always higher
3. Always equal
4. Either higher or lowers

How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.

Write and balance the chemical equation that represents the reaction of aqueous sulfuric acid with aqueous sodium hydroxide to form water and sodium sulfate. include phases.

Exit what is the density of an object having a mass of 5.0 g and a volume of 45.0 cm3?