A radioactive isotope has a lifetime of 6.30 min.If you begin with a sample of 2.50 moles of this isotope,how many atoms have you left after one hour?

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The half-life of the isotope is 6.30 minutes. In one hour (60 minutes), approximately 9.52 half-lives have passed. Starting with 2.50 moles, which is 2.50 * 6.022 * 10^23 atoms, the remaining atoms after one hour can be calculated using the formula N = N0 * (1/2)^(t/T), where N0 is the initial number of atoms, t is the time elapsed, and T is the half-life. This results in approximately 1.10 * 10^20 atoms remaining.

A Radioactive Isotope Has a Lifetime of 6