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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 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 times does 9 go into 27?
Three times.
How much is one and a half plus one and a half?
three
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}).
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.
What is a word that starts with tr and means to make three times as much?
Triple means three times as much.
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
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
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.
How many times were the cowboys purchased and for how much?
Three times.
