you have two identical balloons, a dowel. and a piece of string. How can you use those things to show that a gas has mass and volume?

Ibelieve its because the stove is a cleaner burning fuel

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.

Answer(2) electrons;