Question

The half-life of uranium-238 is 4.5x10^9 years. The half-life of uranium-234 is 2.5x10^5 years. How many times greater is the half-life of uranium-238 that of uranium-234

Answer 1

Half-life of uranium-238
`18 * 10^(3) \text { times greater }` that of uranium-234

Step-by-step explanation:

Half time of uranium-238 =
`4.5* 10^9` years

Half time of Uranium-234 =
`2.5* 10^5` years

To find how much times greater the half life of uranium-238 is from uranium-234

=
`\frac{\text { Half life of Uranium-238 }}{\text { Half time of Uranium - 234 }}`

=
`(4.5 * 10^(9))/(2.5 * 10^(5))`

=
`18 * 10^(3) \text { times greater }`

Hence Uranium-238 is
`18 * 10^(3) \text { times greater }` than Uranium-234