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When did we go from grams to milligrams?

And sure, weigh out ten grams of sand or powdered charcoal if you're worried about the density. This is an order of magnitude estimate, so a factor of two here or there is nothing.

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right. and something like 4g of sand is a very small volume. ever cough up a mucus thing when you're sick? that's about the same weight for a couple of those. so smoke from smoking under 5 packs of cigs over a full year. we probably get that amount over a year from second-hand smoke. There are plenty of people who smoke a pack a day. This is one cig every 3 days. Tiny amount, easily cleared out. the flour example would be a cig every day. I'd say that's a pretty big difference. kinda like going 30 vs going 90 on a side street in your car.

As far as your question - I'm not sure what you're asking here. the soot statistic is in grams. the statistic for weight of crap in cig smoke is per puff, and is in mg. when you add up the crap in a pack of cigs, it's about 2000mg as the simple arithmetic shows. you are free to google factor/label method, or take an 8th grade science class.

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