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What is the half life of Iodine 131 after 24 days if .125 grams remain from 1 gram?
Wiki User
∙ 13y ago
Half-life is an inverse exponential based 2 function, such that after successive half-lives, there are 0.5, 0.25, 0.125, 0.0625, etc. of the original sample remaining. From the question, the number of half-lives can be determined by inspection as 3, thus the half-life, if the total period is 24 days, must therefore be 8 days.
Confirming, from the NNDC database at Brookhaven National Laboratories, the half-life of 53131I is 8.0252 days, by beta- decay. For more information, please see the Related Link below.
Formally, the equation for half-life is ...
AT = A0 2(-T/H)
... where A0 is the starting activity, AT is the ending activity at time T, and H is the half-life in units of T.
Wiki User
∙ 13y ago
The half-life of Iodine-131 is 8 days. If 0.125 grams remain after 24 days from an initial 1 gram sample, this means three half-lives have passed (24 days / 8 days = 3 half-lives).
Wiki User
∙ 14y agoSince Iodine-131 (131I53) has a half life of about 8 days, 0.125, or one eighth, of the original activity of I-131 would remain after 24 days, or three half-lifes.
AT = A0 2(-T/H)
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Diff between gram's iodine and iodine?
Gram's iodine is a staining solution used in microbiology to differentiate between gram-positive and gram-negative bacteria based on their cell wall structure. Iodine, on the other hand, refers to the chemical element itself and can be used in various applications such as disinfectants, antiseptics, and dietary supplements.
What is the weight of iodine?
gram-Equivalent of iodine is 127 because its molecular weight is 2(127) and 2 electron change involve in the redox titration
Differences between lugols iodine and grams iodine?
Lugol's iodine is a solution of iodine and potassium iodide, used as a disinfectant and for staining purposes in microscopy. Gram's iodine is a complex of iodine, potassium iodide, and iodide, used in microbiology as a mordant for Gram staining. Gram's iodine is specifically used in the Gram staining technique to differentiate between bacteria based on their cell wall composition, while Lugol's iodine has broader applications in disinfection and staining.
What is crystal violet iodine complex?
Crystal violet iodine complex, also known as the Gram's iodine, is used in the Gram staining technique to differentiate between Gram-positive and Gram-negative bacteria. It works by forming a complex with the peptidoglycan layer of the bacterial cell wall, allowing for visualization under a microscope.
How many gram-moles in 320 grams of SO2?
5
Given that zinc reacts with iodine in the fixed mass ratio of 1 gram of zinc to 3.88 grams of iodine how many grams of iodine are required to completely react with 4.2 grams of zinc?
For every 1 gram of zinc, 3.88 grams of iodine are required to react. So in this case, with 4.2 grams of zinc, the amount of iodine needed would be (4.2 grams zinc) * (3.88 grams iodine / 1 gram zinc) = 16.296 grams of iodine.
What is the action of iodine in grams stain?
Iodine is used to bind the Crystal Violet to the Gram Positive microbes.
Radioactive iodine 131 has a half life of eight days The amount of a 200.0 gram sample left after 32 days would be?
You start with 5 grams- every 8 days, half of what is there goes away. At 8 days. there will be 2.5 grams. At 16 days, half of THAT is gone- now down to 1.25 grams. At 24 days, half of THAT is gone, leaving 0.625 grams. At 32 days, you have half of 0.625 grams. so divide .625 by two and you get .3125.
Diff between gram's iodine and iodine?
Gram's iodine is a staining solution used in microbiology to differentiate between gram-positive and gram-negative bacteria based on their cell wall structure. Iodine, on the other hand, refers to the chemical element itself and can be used in various applications such as disinfectants, antiseptics, and dietary supplements.
How many grams of radium-222 remain in a 12-gram sample after 76 seconds?
After 76 seconds, half of the radium-222 would have decayed (its half-life is about 3.8 days). Therefore, the quantity of radium-222 remaining in the 12-gram sample would be 6 grams.
Function of Gram's iodine?
Gram's iodine is used in the Gram staining method to differentiate bacteria into two major groups: Gram-positive and Gram-negative. It functions by forming complexes with the crystal violet dye in the cell wall of the bacteria. This allows for the retention of the dye by Gram-positive bacteria, while it is washed off from Gram-negative bacteria.
Differences between lugols iodine and grams iodine?
Lugol's iodine is a solution of iodine and potassium iodide, used as a disinfectant and for staining purposes in microscopy. Gram's iodine is a complex of iodine, potassium iodide, and iodide, used in microbiology as a mordant for Gram staining. Gram's iodine is specifically used in the Gram staining technique to differentiate between bacteria based on their cell wall composition, while Lugol's iodine has broader applications in disinfection and staining.
Radioactive iodine-131 has a half-life of eight days. The amount of a 200.0 gram sample left after 32 days would be -?
12.5 g
How much of an 800-gram sample of potassium-40 will remain after 3.9109 years of radioactive decay?
100 grams
What is the plural of gram?
The plural of gram is grams.
If a smoke detector initially contains 1 gram of Americium 241 how much will remain in 432 years?
0,5 grams
What is the weight of iodine?
gram-Equivalent of iodine is 127 because its molecular weight is 2(127) and 2 electron change involve in the redox titration
