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What fraction of the original c14 would you expect to be present in a fossil that is twenty eight thousand six hundred and fifty years old?
The half-life of C14 is 5730 years so the given period is 5 half-lives. You should, therefore, expect approx 2-5 = 0.03125 of the original C14 to remain.
When shannon has read two fifths of the bookwhat fraction will she still have left to read?
3/5 would remain. 1 - 2/5 = 3/5.
What is the mixed number equivalent to 3.750?
To get the mixed number of 3.750, first separate the whole number - that will remain constant. So you have 3 and 750/1000 (the fraction equivalent to .750) Now all you need to do is simplify the fraction. Both the numerator and the denominator are divisible by 250. Through simplifying, the fraction would be 3/4. Now just put the two numbers together, and the answer is 3 3/4.
How much Cu-61 (half-life about 3 hours) would remain from 2 mg sample after 6 hours?
6 hours = 2 half lives, thus 25 % would remain. 0.25 x 2 mg = 0.5 mg.Done another way...fraction remaining = 0.5^n where n = number of half lives = 6hr/3hr = 2fraction remaining = 0.5^2 = 0.250.25 x 2 mg = 0.5 mg
What does remain mean in math?
Remain, or remainder, is the amount left over when one number is divided into another, but doesn't divide equally. For example, 25 divided by 6 is 4, with a remainder of 1.
