Apatient is given 40.00 mg of iodine-131 (131i ) 131 53
the half-life of 53 i is 8 days.
how many milligrams of the 131i remains in the
patient after 32 days?

2.5 mg

We are given;

We are required to determine the mass that will remain;

N = N₀ × 0.5^n

where, N is the remaining mass, N₀ is the original mass, and n is the number of half lives.

Therefore;

n = time ÷ half life

   = 32 days ÷ 8 days

  = 4

Therefore;

Remaining mass = 40.0 mg × 0.5^4

                            = 2.5 mg

Hence, the remaining mass of I-131 after 32 days is 2.5 mg

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

both the fifth and fourteenth amendments of the united states contain a due process clause. while the fifth amendment describes a legal obligation of the federal government to not deprived of life, liberty or property without due process of law, the fourteenth amendment applies the same obligation to the states to guarantee that all of the states provide fair procedures as well.