Questions tagged [composition]

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Are those magnetic iron filings in the dirt pure iron?

When I was a kid we used to drag magnets around in the dirt and collect "iron filings". Are they pure iron, or something else?
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Why are all 3 of propane, butane and isobutane used in deodorant sprays?

Here are the back ingredient labels of a few popular commercial alcohol-based deodorant sprays. As one can clearly see, they all have many things in common, but the 3 which are of importance in lieu ...