barrazag0715 barrazag0715
  • 11-03-2021
  • Mathematics
contestada

A radioactive isotope has a half life of 4.51 days. If 12.63 grams are now present, how much will be left after 15
days?

Respuesta :

irspow
irspow irspow
  • 11-03-2021

Answer:

Step-by-step explanation:

[tex]f=ir^t\\ \\ \frac{1}{2}=r^{4.51}\\ \\ ln(0.5)=4.51lnr\\ \\ r=e^{\frac{ln0.5}{4.51}}\\ \\ r\approx 0.8575\\ \\ f(15)=12.63(0.8575^{15}\\ \\ f(15)\approx 1.26g[/tex]

Answer Link

Otras preguntas

Which of the following statements are true about elements and compounds? A. Elements are made up of compounds. B. Compounds are made up of elements C. Element
Oliver interviewed 30% of the 9th grade class and 70% of the 10th grade class at his school. Jenny interviewed 75% of the 9th grade class and 25% of the 10th gr
Valorie was on vacation in sunny California. She forgot to put on sunscreen, as a result she got a sunburn. Which body system does a sunburn affect? 1. Excretor
Question 1(Multiple Choice Worth 10 points) (04.04 LC) Which is a possible effect of identity theft? Increased mental stress O Increased purchasing power Decrea
Ill give brainiest - please help ASAP WITH THE WORK THO PLEASE?
Solve the following equation for x 2log: 2x = 2 Describe what method you used to solve the problem and why?
help me find the volume please! ( links = report )
28. Briana Miller deposited a check for $543.00 and a check for $231.12. She received $60.00 in cash. What was her total deposit?
what is conditional operator in c?​
Find the value of x. I need some help