Ask a New Question

Question

The half-life of plutonium-234 is 9 hours. If 40 milligrams is present now, how much will be present in 4 days? (Round your answer to three decimal places.)

13 years ago

Answers

Steve
after h hours,

40 * (1/2)^(h/9)

That's because for every 9 hours, the amount is multiplied by 1/2

so, after 4 days = 96 hours, we will have

40 * (1/2)^(96/9) = .0246 mg
13 years ago

Related Questions

If 6.90 g of (half-life = 5.30 y) are allowed to decay, how many grams would be left after 1.00 y a... The half-life for the first-order decomposition of is 1.3*10^-5. N2O4--> 2NO2 If N2O4 is int... The half-life of the plutonium isotope is 24,360 years. If 10 grams of plotonium is released into th... The half life of plutonium is 250 years. If the starting mass is 750g find; An equation that models... Plutonium-239 has a half-life of 24 000 years. What percent of plutonium-239 remains after 10 000 ye... What is the half life of U-235 according to the graph? Responses A 50 years50 years B 1 billion y... The half-life of plutonium-238 is 87.7 years. What percentage of the atoms in a sample of plutoni... Given that the half-life of a certain radioactive isotope is 32 hours, find the fraction of the samp... What is half-life and how do I calculate the remaining amount of a substance after 270 days if its h... The half-life of plutonium-239 is 24,300 years. If a nuclear bomb released 8 kg of this isotope, ho...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use