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: The half-life of technetium-99m (Problem 11.76) is 6.01 hours. If a sample with an initial activity…

A: Given: The half-life of technetium t1/2 = 6.01 h. The initial activity N0 = 5.55×105 Bq. The time t…

Q: 4. ,A reactor is being designed for a new wastewater treatment plant. The effluent BOD is not…

A: given that,v=1000 m3k=0.25-1 R= -k(BOD)

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: Forced vibratory system, a body of mass 2 kg vibrates in a viscous liquid. The 20 N harmonic…

A: Given that: m=2 kgF=20 NA=15 mm=0.015 mT=0.15 s

Q: What is the activity in Ci of a 2.6 mg sample of 3H? VE ΑΣΦ Ro = What is the activity in Bq of a 2.6…

A:

Q: 7.50 mCi of 99m Tc is used in a brain scan. What is the mass of technetium?

A: Here, the activity is The equation for the activity is

Q: the V•O2max of people tends to declineafter age 30 by about 9% per decade for sedentary…

A: Given: The volume of oxygen of 30 year old is 3.1 L/min In sedentary individuals, decline is…

Q: How many kilograms of water are needed to obtain the 198.8 mol of deuterium, assuming that deuterium…

A:

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: Based on the linear, non-threshold dose-response model, the risk factors for excess cancer incidence…

A: Answer in the next step.....

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: A single-walled carbon nanotube has 2.3x 1019 carbon atoms per m2 along its surface. The nanotube…

A: The mass density (ρ) of a substance is the mass of one unit volume of the substance. For nanotubes…

Q: The rate of a simple enzyme reaction is given by the standard Michaelis–Menten equation: rate = Vmax…

A: Given: Rate = Vmax SS+km

Q: Ann analysed mercury content on a canned fish and the permissible limit of mercury in fish is 0.1…

A: Introduction: Cold Vapor Atomic Absorption Spectroscopy or CVAAS is one of the primary techniques…

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: