And what do engineers know about chemistry? I've got a Ph.D.in physical chemistry and both my parents had B.Sc's in chemistry.
A byte is eight bits. Frostbite is what you get if your extremities get too cold.
But you have to melt the steel frame before the rubble can fall freely, and the rubble has been calcined by then and is dust, rather than lumps of rubble.
It took a lot longer than ten seconds. I was watching it on Dutch TV when it happened - not the first impact, but by the second everybody at work knew that it was happening and had turned on TV sets around the lab, and I saw the second plane hit the tower. It took quite a while before the buildings fell down. There was a lot of smoke around, initially from the jet fuel burning and more as the buildings burnt down.