When a hydrophobic substance like a hydrocarbon is dissolved in water, a clathrate cage or ordered water molecules is formed about it. If we consider only the effects on water, what do you expect the sign of delta S to be for this process?

it is a negative acceleration

in most common fires, oxygen is needed for an oxidation reaction to takes place. the combination of oxygen with any element as fuel can create fire and combustion will occur especially if wood, light materials and other combustible things are combine with oxygen.