What is polyethylene and why is it used so frequently?

Polyethylene is a plastic made out of long chains of ethylene groups - its formula is [C2H4]n, with the n meaning there can be as many ethylenes as you want. It is used so frequently because it's easy to work with, it's very inexpensive and it's versatile.Polyethylene (or polyethene) is the polym...

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How much would an unopened box of a Hot Wheels car be worth?

Obviously a collectible item inside its original box is worth more than the item without the box, or even in a box that has been opened. But having said that, the real answer is that it would depend on what Hot Wheels car is inside the box. The value of Hot Wheels cars depends on their rarity and...

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