Two months later 13.8 milligrams of the barium-131 still be radioactive.
<h3>How is the decay rate of a radioactive substance expressed ? </h3>
It is expressed as:
where,
A = Amount remaining
A₀ = Initial Amount
t = time
T = Half life
Here
A₀ = 0.50g
t = 2 months = 60 days
T = 11.6 days
Now put the values in above expression we get
= 0.50 × 0.0277
= 0.0138 g
= 13.8 mg [1 mg = 1000 g]
Thus from the above conclusion we can say that Two months later 13.8 milligrams of the barium-131 still be radioactive.
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Question: Suppose that 0.50 grams of ban that 0.50 grams of barium-131 are administered orally to a patient. Approximately many milligrams of the barium would still be radioactive two months later? The half-life of barium-131 is 11.6 days.
Explanation:
- a single thing, person, or group forming part of a whole There are 36 units in my apartment building.
- the least whole number : one.
- a fixed quantity (as of length, time, or value) used as a standard of measurement An inch is a unit of length.
mass=kilogram (kg)
temperature=kelvin
power=watt
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<h2>stay safe healthy and happy..</h2>
Answer:
option d
Explanation:
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When calculating total valence electrons, extra electron
pairs are added to the Outside of an atom. The answer is letter C. Suppose you
have a compound of CCl4. You know that chlorine can only share 1 electron
because 7 of its electrons are filled. Also, in carbon, it can only share 4
electrons because 4 of it are already filled. That is why carbon needs four
chlorine to form CCl4.