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max2010maxim [7]
2 years ago
13

I NEED HELP ASAP I’ll give Brainliest ,THANK YOU

Mathematics
2 answers:
bearhunter [10]2 years ago
7 0
Is anyone’s Brainly ads not working
Nataly [62]2 years ago
3 0
D because I just took the test
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3 years ago
A certain substance has a half-life of 4 minutes. A fresh sample of the substance weighing 90 mg was obtained. After how many mi
sveticcg [70]
  • We are to find the time (number of minutes) is would take for 23 mg of the substance to be remaining.

  • The formula for time is written as:

t =  [t1/2 x In(Nt/No)]  / In 2

where:

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t =  time elapsed = ?

Hence,

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Approximately to the nearest hundredth = 7.87 minutes

Therefore, there will be 23mg of substance remaining after 7.87 minutes.

To learn more, visit the link below:

brainly.com/question/16624562

7 0
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