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How much of an original isotope remains at the end of a second half-life?
Wiki User
∙ 6y ago
One quarter.
Wiki User
∙ 6y ago
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What is the second isotope of hydrogen?
Deuterium, it has 1 neutron and one proton.
How many neutrons are there in calcium?
The most common isotope of calcium (40Ca) has 20 neutrons. You can find this out by subtracting the number of protons (atomic number, 20), from the total AMU's of 40. About 96% of calcium on Earth is calcium-40. Calcium also has eight other isotopes, 41Ca through 48Ca, five of which are radioactive. The second-most prevalent stable isotope is 44Ca which is about 2% of all calcium.
What procedures can be described as a second free write about one of the original ideas?
looping
How many electrons are in the second energy level of hydrogen?
Depends on the isotope can be 0 or 1 hydrogen is a highly unstable element that the electron Jumps betweent the two energy levels
What is relationship of an atom with 12 protons 12 neutrons and 12 electrons to an atom with 12 protons 13 neutrons and 12 electrons?
Both those atoms are Magnesium but the second one is Magnesium25 not Magnesium 24 (standard Magnesium). Both have 12 protons and 12 electrons. Their charges are the same and their weights are the same.
What is the rate in halflife that radioactive decay occurs?
Half-life is the time it takes for one half of a certain type of atom (isotope) to decay. The amount of time varies a lot between different isotopes; in some cases it may be a fraction of a second, in another, it may be billions of years.
What is the average atomic mass of an element is the average atomic masses of what kind of isotopes?
average atomic massof an element=(Atomic mass of first isotope X % of that isotope) + (Atomic mass of second isotope X % of the second isotope)
What fraction of a radioactive sample remains after one half-life?
Half of the original sample of a radio isotope remains after a half-life period. After two half-life periods, one-fourth of the radio isotope remains.
How can you simulate the decay of a nuclear isotope?
Collect a large number of dice. Roll them all at once; each represents a number of atoms of the isotope. Remove any with a certain number or numbers (for example, every six or every one, or any die with two or less) from the group; this represents the fact that such a number of atoms of the isotope have decayed and no longer exist. Continue rolling the group until none remain. From this, you can plot the number of dice remaining after each number of rolls, and this can be compared to the number of atoms of isotope (or the number of clicks per minute on a radiation counter) that are left at a given time - you can even derive the halflife in terms of the number of rolls for the set of dice and conditions used. Altering the number at which a die is removed can be used to demonstrate a different halflife; for example using two numbers instead of one will half the halflife and using a number equal to the number of sides on the dice will make the halflife almost exactly one. You could also define it in terms of "divide the sum of the numbers rolled by ten and remove that number of dice" or some other condition like that. A further more advanced simulation could then roll any removed dice separately in another group, representing a daughter isotope (product of the previous decay) also decaying and using similar or different conditions for this roll as well. As dice are removed from the first group, they are added to the second, and will subsequently be removed from there as well. This can be tracked just as the previous stage was, and as many stages can be added as you like until a "stable isotope" is reached. This can be used to simply explain the idea that many radioactive isotopes produce more isotopes that are also radioactive and also decay in the same way, and to demonstrate the effect of the halflife of each on the overall number of isotopes for each at different times.
A sample of radioactive isotope has a halflife of 1 day how much of the original sample will be left at the end of the fourth day?
If a sample of radioactive material has a half-life of one week the original sample will have 50 percent of the original left at the end of the second week. The third week would be 25 percent of the sample. The fourth week would be 12.5 percent of the original sample.
What is the second isotope of hydrogen?
Deuterium, it has 1 neutron and one proton.
How much of the original sample will be left at the end of the second day if a sample of radioactive isotope has a half life of 1 day?
Hi, Each half-life means the mass of the sample has decreased by 1/2 its mass. Thus; After 1 half-life, 1/2 the sample has decayed. After 2 half-lives 3/4 of the sample has decayed. Hope this helps.
What were the knights crime his original sentence and his second sentence?
What were the knight's crime, his original sentence, and his second sentence?
Who was Al Copeland second wife?
Her name remains a mystery. Pattie White was his second wife
What is the basic of time?
The second, defined as the time taken for a specific number of vibrations in a particular isotope of caesium.
What is the percentage of radioactive nuclei left after 3 half lives have passed?
12.5%
What happens to the second mortgage if the first mortgage is sold?
Nothing happens to it. It still remains in second place.
