In 1950, scientists estimated a certain animal population in a particular geographical area to be 6,400. In 2000, the population
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6.665 grams of the 13 grams remain after 8 hours.
<h3>How much of a 13 gram sample of iron-52 would remain after 8 hours?</h3>The decay equation for the 13 grams of iron-52 is:
Where N is the amount of iron-52, and t is the time in years.
Where we used the fact that the half-life is exactly 8.3 hours.
Now, the amount that is left is given by N(8h), so we just need to replace the variable t by by 8 hours, so we get:
So 6.665 grams of the 13 grams remain after 8 hours.
If you want to learn more about half-life:
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There are of each suit in a deck of
cards.
This means the probability of drawing a diamond card is . You can divide the numerator and denominator each by
to simplify.
Since there are the same number of clubs as there are diamonds, the probabilities are the same.