Patients with < 10% TBSA burns can be resuscitated orally (unless the patient has an electrical injury or associated trauma). In the case of patients with burns 10-40% TBSA, secure a large-bore IV line; add a second line if transportation will take longer than 45 minutes. South African Burn Society burn stabilisation protocol
Water is an ingredient that can dissolve soap. Water is a solvent and the the soap is the solute. Solutes are things that dissolve in solvents. I'm not sure what you're asking about an ingredient, but water makes all soap dissolve.
Lye Soap is also an effective cure for bad stomach aches, as unlikely as it may seem. take about a 1/4th a teaspoon of lye soap and dissolve it in four cups of warm water. Let the water cool, and after it has cooled consume the four cups of water a cup at a time throughout the day (one in the morning, then noon, etc.)