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aileenzerr9664
16.01.2021 •
Chemistry
If half of a radioactive isotope decays in one hour, how much of the original isotope will remain after three hours?
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Ответ:
1/8
Explanation:
Use logic,
every one hour, half of a radioactive remains
for the first hour, half remains
for the second hour, half of half remains or quarter remains
for the third hour, 1/2 of 1/2 of 1/2 or 1/8 remains
or use this equation
where
n = amount after f time
r = amount of the original isotope
f = time
t = half-life
Ответ:
When making ice cream, you're using physical changes. When you shake your bag, you're freezing the milk, which means the water in it is turning from a liquid (water) into a solid (ice).