Could I get some help plz? There's my question below :) Label the following as redox or non-redox reactions.

2 KBrO3 (s) --> 2 KBr (s) + 3 O2 (g)
MnBr2 (aq) + 2 AgNO3 (aq) --> Mn(NO3)2 (aq) + 2 AgBr (s)
PCl3 (l) + Cl2 (g) --> PCl5 (s)
Cu (s) + 2 AgNO3 (aq) --> Cu(NO3)2 (aq) + 2 Ag (s)

Calculate the molarity of each of the following solutions. part a) 0.12 mol of lino3 in 5.5 l of solution part b) 60.7 g c2h6o in 2.48 l of solution part c) 14.2 mg ki in 100 ml of solution

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.

What four properties do all waves have in common