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What is 5 percent of 1500 dollars?
Well...if you drop a 0 for ten percent that would be 150. So half of that would be 5 percent which is 75.
What is half of one half of a percent?
It is a quarter of a percent
What is one half of one percent of 80000?
One percent of 80, 000 would be 8000. One half of 8000 is 4000. Therefore, the correct answer of this question is 4ooo.
How do you write one and a half percent?
1.5%one and a half percent = 11/2% or 1.5%
How do you spell out 1.5 percent?
One and a half percent
What percent of carbon14 is left after 5 half-lives?
After 5 half-lives, 3.125% of the original carbon-14 would remain. Each half-life reduces the amount by half, so after 5 half-lives, it would be reduced by a factor of 2^5 = 32.
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
A radioactive element has a half-life of 1000 years. If a sample of this element begins with a mass of 20 grams how long would you have to wait for the mass to decrease to 5 grams?
Since the element has a half-life of 1000 years, it will take two half-lives for the mass to decrease to 5 grams from 20 grams. Two half-lives equal 2000 years, so you would have to wait 2000 years for the mass to decrease to 5 grams.
Which statement is true about half-lives a Different atoms of the same element have different half-lives. b Each radioactive isotope has its own half-life. c All radioactive nuclides of an element?
The correct answer is: Half-lives are not affected by temperature.
How much cesium is left after 4 half-lives?
1/16 of the original sample of any unstable element remains after 4 half lives.
How can half lives be shortened?
Half life of an element can't be changed.. It is a characteristic of a radioactive element which is independent of chemical and physical conditions.. Half life is that time in which half of radioactive sample( i.e., a radioactive element) decomposes. So no matter what amount you take half life of an element remains same.
What percent of potassium-40 remains after two half-lives?
25%
How long it would take for 99.9 percent of Cs to decay if its half-life is 30 years?
It would take approximately 300 years for 99.9% of Cs to decay. This is calculated by dividing the half-life by the natural log of 2, which results in approximately 10 half-lives for 99.9% decay.
How many half-lives have passed?
To determine how many half-lives have passed, you would need to divide the total time passed by the half-life of the substance. The result would give you the number of half-lives that have occurred.
What percentage of a radioactive element will remain after seven half lives?
After seven half lives, approximately 0.78125% (1/2^7) of the original radioactive element will remain. This can be calculated by repeatedly halving the remaining amount after each half life.
After three half-lives what percent of the radioactive isotope is remaining?
After three half-lives, 12.5% of the radioactive isotope is remaining. This is because each half-life reduces the amount of radioactive material by half.
If a radioactive element half life is 500000 years given 20 grams of the element how much is left after 4 half lives?
After 4 half-lives (2,000,000 years), only 1/16th (1/2^4) of the original amount of the element will remain. Therefore, after 4 half-lives, 20 grams * 1/16 = 1.25 grams of the element will be left.
