Answered

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Select the correct answer. if two half-lives have passed since a scientist collected a 1.00-gram sample of u-235, how much u-235 is left now? a. 0.001 g b. 0.100 g c. 0.250 g d. 0.450 g e. 3.00 g

Sagot :

stujadynllathan

Answer:

0.25 g of U-235 isotope will left .

Formula used :

where,

N = amount of U-235 left after n-half lives = ?

= Initial amount of the U-235 = 1.00 g

n = number of half lives passed = 2

0.25 g of U-235 isotope will left .

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