jaeleyacstitt jaeleyacstitt

20-01-2022
Mathematics

contestada

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

Respuesta :

srklein987 srklein987

20-01-2022

Answer:50

Step-by-step explanation

It would take exactly

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

Answer Link

heefbeef heefbeef

10-06-2022

Answer:

The actual answer is 60.

Step-by-step explanation:

Answer Link

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