Anonymous 7d710d7df4296253257bd2281e9610cd started this discussion 2 months (2008-10-04 14:11:56 UTC) ago:
Swallowing a gold ring won't result in it turning into poop, right? What about a small ordinary stone?
Also, while the stomach is protected somehow, why doesn't hanging upside-down cause the acids to float out into your throat and kill you? There must be a hole in the top for the food to be able to enter your stomach…
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Anonymous 9bcf7526b141b20c7f3dc7c1f94d4c1f replied with this 2 months (2008-10-04 14:23:39 UTC) ago, 12 minutes later (#66,176):
The acid wont dissolve plastic, not to mention metal.
There is a part of the stomach which is called the Cardia, it serves as a kind of valve, which lets food in and doesn't let anything out of the stomach.
Anonymous 6e1e185f04a2d5a5c603297ce446fdda replied with this 2 months (2008-10-04 16:07:00 UTC) ago, 2 hours later (#66,207):
Strong enough to burn a hole in carpet if you leave it there after puking. The human stomach has "pits" in it that produce concentrated hydrochloric acid. It has a pH of 1 - 2. TBH the molarity is likely to be "low" compared to laboratory preparations, but gastric juices are enough to turn your teeth translucent and soft if they're exposed to them too much.
Anonymous 7f6b491e088df26003c16e1468c3b222 replied with this 2 months (2008-10-04 17:19:23 UTC) ago, 1 hour later (#66,240):
These acids are strong enough to dissolve some metals, but they take time to do it.
Gold is not affected by hydrochloric acid but if you mix HCL with nitric acid you get what's called royal water which will dissolve gold even though neither HCL nor nitric acid can do that on their own.
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