Select the observations that might indicate a chemical change has occurred. Group of answer choices

Formation of a substance in a different state

Breaking or melting

Phase change

Production of flames

Production of heat or light

How much heat is released upon converting one mole of steam (18.0 g) from 100.0 ∘c to water at 25.0 ∘c? show work and constants, trying to figure out how it works. only given the heat capacity for steam and water so try to only use that

Describe the interaction that occurs between two objects with the same electrical charge.

What reaction is taking place? 02 + c3h8 = h20 + co2