Vinegar is only harmful to those with respiratory problems such as Asthma, sarcoidosis, S.A.R.S and a few others. When boiled individuals with the listed diseases will experience constant illness and a weakend immune system. Overexposure to vinegar in individuals with the listed sicknesses will cause serious damage!
NO
because a vinegar is not harmful to human while a hydrohcloric acid is harmful
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no.
yes
Apple cider vinegar is not harmful in no way but one thing with it is that it is way too strong
It is an acid
vinegar
Not much, but if you soak it in vinegar the shell will dissolve!
between 6-8 months if boiled first in vinegar
If it is already boiled nothing will really happen except vinegar eating it up. If it was a raw egg with the shell intact, the vinegar will dissolve the shell and you can watch the proteins get denatured.
Diffusion between hypo/hypertonic substances across a semipermeable membrane. AKA: The water from the vinegar fills the egg
Absolutely, black mold is harmful, throw it away.