The answer shows in the picture
Answer:
356.1m
Step-by-step explanation:
use pythagoras theorem
where the imaginary line is hypotenuse
using the formula
square of hypotenuse= square of perpendicular +square of base
The quantity of substance remains after 850 years is 8.98g if the half life of radioactive radium is 1,599 years.
The time taken by substance to reduce to its half of its initial concentration is called half life period.
We will use the half- life equation N(t)
N e^{(-0.693t) /t½}
Where,
N is the initial sample
t½ is the half life time period of the substance
t2 is the time in years.
N(t) is the reminder quantity after t years .
Given
N = 13g
t = 350 years
t½ = 1599 years
By substituting all the value, we get
N(t) = 13e^(0.693 × 50) / (1599)
= 13e^(- 0.368386)
= 13 × 0.691
= 8.98
Thus, we calculated that the quantity of substance remains after 850 years is 8.98g if the half life of radioactive radium is 1,599 years.
Learn more about half life period:
brainly.com/question/20309144
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Red and blue
20:1
I’m sorry if I get this wrong
N is equal to 25.
When you take the numbers, divide the 5 by .2 or whatever your percentage is.