PET is used to make plastic drink bottles. it is made by joining many individual units together. write the labels below onto the diagram in the correct places, to show how PET is made.

What is the molality of a solution that has 4 mol of kci in 0.800 kg of water

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

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.