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Three times a half-life is equivalent to one and a half full life cycles of a substance. In terms of decay, after three half-lives, only one-eighth of the original amount remains. This is because each half-life reduces the amount by half, so after three halvings (1/2, 1/4, 1/8), the remaining quantity is 1/8 of the initial amount.
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How much Cu 61 half life about 3 hours would remain from a 2mg sample after 9 hours?
The half-life of Cu-61 is approximately 3 hours, meaning that after each half-life, half of the remaining sample decays. After 9 hours, which is three half-lives (3 hours x 3 = 9 hours), the original 2 mg sample would have gone through three decay cycles. Thus, the amount remaining would be (2 , \text{mg} \times \left(\frac{1}{2}\right)^3 = 2 , \text{mg} \times \frac{1}{8} = 0.25 , \text{mg}).
How much is one half of three eighths?
Three eighths is the same as six sixteenths - half of six sixteenths is three sixteenths
How much less is three eights than on half?
To find out how much less three-eighths is than one-half, first convert one-half to eighths. One-half is equivalent to four-eighths. Subtracting three-eighths from four-eighths gives you one-eighth. Therefore, three-eighths is one-eighth less than one-half.
How much Cu-61 half-life about 3 hours would remain from a 2mg sample after 9 hours?
1/8th of a mg. You lose half every three hours.
Three times as much?
triple
How much Cu 61 half life about 3 hours would remain from a 2mg sample after 9 hours?
The half-life of Cu-61 is approximately 3 hours, meaning that after each half-life, half of the remaining sample decays. After 9 hours, which is three half-lives (3 hours x 3 = 9 hours), the original 2 mg sample would have gone through three decay cycles. Thus, the amount remaining would be (2 , \text{mg} \times \left(\frac{1}{2}\right)^3 = 2 , \text{mg} \times \frac{1}{8} = 0.25 , \text{mg}).
How much is one and a half plus one and a half?
three
What is the meaning of three times as much?
times 3. For example, Three times as much of 7 is 3*7 = 21 Three times as much of 10 is 3*10 = 30
How much is one half of three eighths?
Three eighths is the same as six sixteenths - half of six sixteenths is three sixteenths
After three half lives have passed how much of the original radioactive material will remaim?
After three half-lives, 12.5% of the original radioactive material will remain. Each half-life reduces the amount of material by half, so after three half-lives the remaining material will be 0.5^3 = 0.125 or 12.5%.
How much is double the half of three fourths?
The double is negated by the half, so you are still left with the original three-fourths.
A sample of a radioactive element has a mass of 80 g. How much parent and daughter materials are in the sample after two half-lives?
A half-life is the amount of time it takes for half of the material to decay. So if you started with 80g After 1 half-life you would have 40 g After 2 half-lives you would have 20 g After three half-lives you would have 10 g
What is a word that starts with tr and means to make three times as much?
Triple means three times as much.
How much less is three eights than on half?
To find out how much less three-eighths is than one-half, first convert one-half to eighths. One-half is equivalent to four-eighths. Subtracting three-eighths from four-eighths gives you one-eighth. Therefore, three-eighths is one-eighth less than one-half.
How much Cu-61 half-life about 3 hours would remain from a 2mg sample after 9 hours?
1/8th of a mg. You lose half every three hours.
Why is the answer to 8 times two thirds exactly half of the answer to 8 times one third?
It's not half as much, it is twice as much. And it is twice as much, precisely because 2/3 is twice as much as 1/3.
Three times as much?
triple
