How long will it take for 475 mg of a sample of radium-225, which has a half-life of about 15 days, to decay to 30 mg? A)50 B)52 C)58 D)60

asked Jul 28, 2023 109k views

7 votes

How long will it take for 475 mg of a sample of radium-225, which has a half-life of about 15 days, to decay to 30 mg?

A)50
B)52
C)58
D)60

by Peque

4.1k points

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11 votes

Answer:50

Step-by-step explanation

It would take exactly

475-225 = 250 - 215 = 35 + 15 = ( 50 )

Dita answered Jul 30, 2023

by Dita

3.4k points

7 votes

Answer:

The actual answer is 60.

Explanation:

Samuel Lopez answered Aug 1, 2023

3.6k points

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