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How much of a 100-g sample of thorium-234 will be unchanged after 48.2 days?
Wiki User
∙ 6y ago
25 g
Explanation:Think about what a nuclear half-liferepresents, i.e. the time needed for an initial sample of a radioactive substance to be halved.
Wiki User
∙ 6y ago
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How many days until one-sixteenth of a 54.2 g sample of thorium-234 remains?
The number of days is 96,4.
How much of a g sample of barium-131 would remain after 36 days?
The mass is 1,075 g.
The half-life of Au-198 is 2.7 days When there are 800 atoms of Au-198 in a sample a scientist starts a stopwatch The scientist stops the stopwatch at 8.1 days how many atoms of Au-198 remaining?
8.1 days is, if half-life is 2.7 days, 3 half-lives. 12.5%, or 12.5 g, of 79198Au would remain after three half-lives.
A particular element has a half life of 27 daysafter 54 days how much of the radioactive material is left?
The half life is the time it takes for half the atoms in a given sample to decompose. Knowing this then after 27 days there is half the amount left. After 54 days then there is half that half left so that's a quarter.
How much time is required for a 6.95 sample of to decay to 0.850 if it has a half-life of 27.8 days?
The time required for a 6.95 sample to decay to 0.850 if it has a half-life of 27.8 days is 255 days/ Radioactive decay is based on half-lifes, specifically the reciprocols of powers of 2. The equation for decay is... AN = A0 2(-N/H), where A is activity, N is number of half lives, and H is half life. Calculating for the question at hand... 0.850 = 6.95 2(-N/27.8) 0.122 = 2(-N/27.8) log2(0.122) = -N/27.8 -3.04 = -N/27.8 N = 9.16, or TN = (9.16) (27.8) = 255
Thorium-234 has a half-life of 24.1 days. How much of a 100-g sample of thorium-234 will be unchanged after 48.2 days?
Thorium-234 has a half-life of 24.1 days. How much of a 100-g sample of thorium-234 will be unchanged after 48.2 days?
How much of a g sample of thorium 234 will be unchanged after 48.2 days?
After 48,2 days the amount of Th-234 will be 25 g.
How much of a 100 g sample of thorium 234 will be unchanged after 48.2 days?
After 48,2 days the amount of Th-234 will be 25 g.
A biologist noticed that the population of ladybugs in a sample doubled every 3 days If the initial population sample was 30 ladybugs what was the population of ladybugs at the end of 9 days?
After 9 days, the population of ladybugs would double every 3 days, so it would double 3 times. 2^3 = 8. Therefore, the population at the end of 9 days would be 30 ladybugs x 8 = 240 ladybugs.
What is the half life of a radioisotope if a 50 sample becomes 25 after 18 days?
18 days
What is the total mass of 222Rn remaining in an original 160-milligram sample of 222Rn after 19.1 days?
5.0 mg is the total mass of 222Rn remaining in an original 160-milligram sample of 222Rn after 19.1 days.
What is the half life of a radioactive isotope if it takes 6.2 days for a 72 gram sample to decay to 18grams?
18 grams are one fourth of the original sample mass of 72 grams. Accordingly, the half life is 6.2/4 = 1.55 days.
How many days until one-sixteenth of a 54.2 g sample of thorium-234 remains?
The number of days is 96,4.
You dispense 100 g of ointment to a patient The patient will rub two grams of the ointment every day to the affected areas of the skin?
50 days the solution goes thus 100g/2 = 50 days
How long does it take a 100.00g sample of Au-1.98 to decay to 6.25g?
10.76 days
What fraction of a radium sample will remain after 3240?
The answer depends on 3240 WHAT: seconds, days, years?
How long does a urine sample stay good for if being tested for THC?
A urine sample usually lasts up to 7 days if frozen.
