Explanation:
I'll give you a real answer later need points for test questions sorry
For this problem, we use the formula for
radioactive decay which is expressed as follows:<span>
An = Aoe^-kt
where An is the amount left after time t, Ao is
the initial amount and k is a constant.
We calculate as follows:
An = Aoe^-kt
0.5 = e^-k(4.5)
k = 0.1540
An = Aoe^-kt
An = 16e^-0.1540(18)
<span>An = 1.00 mg</span></span>
Hope this answers the question. Have a nice day.
The number of protons and the number of neutrons determine an element's mass number: mass number
1-Autonomy: Our desire to direct our own lives. In short: “You probably want to do something interesting, let me get out of your way!”
2-Mastery: Our urge to get better at stuff.
3-Purpose: The feeling and intention that we can make a difference in the world.
OkSpeed is still the most common factor in fatal road accidents, ... a few kilometres per hour above the speed limit greatly increases the risk of an ... For a car travelling at 70 km/h the risk increased fourfold. ... where Vf is the final velocity, V0 is the initial velocity, a is the rate of deceleration and d is the distance ...
Missing: 240 | Must include: 240