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Q: How long would it take for 12 grams of iodine 131 to decay to 3 grams?
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How long will it take 600 grams of Plutonium to decay on 18.75 grams?

Each isotope has another half life.


How long will it take 27 grams of plutonium-240 to decay to 9 grams?

9987.3844 or 9,990


How long would it take for iodine-131 to decay into xenon?

The half life of Iodine-131 is 8.02 days, that means that say if you had 1 gram of 131I after approximately 8 days there would be only 0.5g left. The other half would have become Xenon-131. After 6 half lives (~48 days in your case) you would only have 1.6% of the original amount left.


Iodine 131 has a half life of 8 days. When will 10 lbs of iodine 131 not be radioactive anymore?

Never. As a simple exponential-decay problem, it can get as small as you want if you're willing to wait long enough, but it never reaches zero.


How long does it take a 5-gram sample of uranium- 235 to decay to a mass of 2.5 grams?

One Half-Life :-)


Does Pepsi cause tooth decay?

All Sodas can over a long period of time. I would say that coke would cause faster decay than pepsi.


Plutonium-240 decays according to the function Q(t)=Q 0 e^ -kt where Q represents the quantity remaining after t years and k is the decay constant 0.00011 ... To the nearest 10 years , how long will it take 36 grams of plutonium-240 to decay to 12 grams?

9,990 years


Carbon-14 has a half-life of 5730 years. How long does it take a 200-gram sample of carbon-14 to decay to a mass of 100 grams?

5,730 years


Carbon-14 has a half-life of 5730 years. how long does it take a 200-gram sample of carbon-14 decay to a mass of 100 grams?

5,730 years


How long does it take for your brain 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.


How long does it take for Coke to decay the teeth?

The decay process caused by Coke on teeth can vary depending on factors such as frequency of consumption, oral hygiene practices, and overall health. Acidic drinks like Coke can start to erode tooth enamel within minutes of consumption, but significant decay may take longer, possibly weeks or months with regular consumption. It's important to limit acidic drinks and maintain good dental hygiene to help protect your teeth.


Does astatine deplete ozone?

No. Astatine is the rarest of all natually ocurring elements. At most, there are a few grams of it on the planet, most of it deep underground. It's increadbly short half-life means that even if some did get out, it would decay long before it reached the ozone layer.