Answer:
reaction 1 and reaction 4 both are decomposition reactions
while reaction 2 is double displacement reaction and reaction 3 and 5 are combination reactions
Answer:
i think it's B sorry if i'm wrong
Im sorry i dont know im sure someone will
It will be the second one
I think that it is D because the higher the molecular mass, the higher it's boiling point. I hope that helped:) Bye!