the abundance 10^(8)percent of iodine in seawater is 5.0 * by mass. How many kilograms of seawater must be treated to obtain 1.0 g of idodine?

Q: Calculate the activity of a pure 9.5-μgμg sample of 32 over 15P (T1/2=1.23×106s).

A: Mass of sample (m) = 9.5 ×10-6 grams Molecular mass of P-32 = 32 grams Half life (T1/2) = 1.23×106…

Q: What is the half-life, t½, (in hr) when the concentration was 100 mg/L?

A: The concentration is decreasing at rate of 10mg/L/hr .

Q: atomic mass unit = 1.661x10-24 grams Technetium-99 has a half-life of 6 hours. Suppose a lab has 80…

A: Half life of Technetium -99      T1/2 = 6 hours Initial amount (mo) = 80 mg  Let amount left after t…

Q: the mass m, is given the equation m=i[0.69]t. i is the intitial dose and t is the number of hours…

A: Given, m=i(0.69)t                  (t comes in the exponent) where i= initial mass             t=…

Q: A sample was weighed three times and the following results were obtained: 12.52 g, 12.50 g, and…

A: Average value is given by the sum of given values divided by total number of values .

Q: f the half-life of cesium-137 is 30 years, approximately how much time will be required to reduce a…

A:

Q: Seawater contains 3 mg of uranium per cubic meter. (a) Given that the average ocean depth is about 4…

A: (a) The formula for the density of a substance is: The volume of the ocean on the earth surface is: