It depends on the location in which the corpse (or body) is in. If it's in a grassy area, (Includes meadows, hills, jungles, woods and forests) it will decompose quickly due to the many insects which roam around the area. The flies lay eggs, maggots are born, and they eat the body from the inside out. Disgusting I know. It would take a body to decay for about fourteen days until becoming a skeleton or just bones. The skeleton itself would take many decades before it becomes dust. If it's in a desert or canyon, it will just dry up. Sort of like how fruit dries up. It could be considered that it decomposes if animals like vultures are around to eat it up. If it's in water or a swamp, the skin would last for a very long time. Just look at those ancient bog bodies discovered. Their skeletons have already dissolved leaving just a bag of wet skin. These bodies are apparently thousands of years old. Finally, if it's in a cold mountain or tundra, it will just freeze up and will not rot due to no insects being around. Again though, any animal can find it and eat it up. Many thousand of years bodies have also been discovered in a decent state. So there you have it. If you want a short answer though, it would take lots of days, sometimes a few weeks, months, even years at times.
Approx one year
You forgot to say that isotope is.
Ozone is decayed back to oxygen. It depends on how the ozone is being converted.
It takes 100 years for a battery to decompose.
I'm Assuming you mean how long does it take for a tuna fish can to decay? Well the time wil vary depending on the temperature of the water, the mineral content and salinity of the water. If you use fresh tap water it will take a long time. Most tap water is balanced especially if you have a water softner. Now river water will take about a year or more in the mountains of california. But in the ocean it may only take a few months. It is all dependent on the impurities in the water.
The decay rate of atoms is typically quantified by a half-life, which is the time it takes for half of the original atoms to decay. If we assume a constant decay rate, we can estimate that it takes approximately 3 half-lives for 75 of the original 100 silver atoms to decay. If the half-life of the silver isotope is 1 hour, then it would take approximately 3 hours for 75 of the atoms to decay.
After death, the brain cells can start to decay within minutes if deprived of oxygen. However, the brain tissue itself can remain intact for hours before significant decay occurs, depending on factors like temperature and environment.
a while
It takes hundreds of years.
about 3-4 months
132g
Decay starts immediately upon death. Decay happens because the body's cells start to die. When the cells die, they exit the body, and dissolve into the ground. The soft tissues cells die first.
It can take 2-3 days on average.
The fustion will take place so long as the decay time for isotopes which is ...not stable is over.
a few months
It will take two half-lives or about 60.34 years for three-fourths of a Cs-137 sample to decay.
For an adult it takes the average of 1:02.34 minutes.
it takes 1 day 17 hours and 29 minutes for orange juice to rot or decay