What is the percent composition of ba(oh)2?

Element SymbolAtomic Mass
Barium Ba137.327
Hydrogen H1.00794
Oxygen O15.9994

Hope this helps, good luck

What do you need with it’s not a question your just stating what it says

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.