Hallar la temperatura final de la mezcla de 1.2 kg de hielo a -12 oC y 2 kg de agua a 55 oC

elctricity and magnet is conversion to it

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.

third one with arrows on top of each other going the same direction