1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Firlakuza [10]
3 years ago
7

Tungsten, W-181 is a radioactive isotope with a half life of 121 days. If a medical lab purchase 24 kg of W-181 how much will be

left after 1 year?
Mathematics
2 answers:
Vladimir [108]3 years ago
8 0

Answer:

2.97 kg.

Step-by-step explanation:

We have been given that Tungsten, W-181 is a radioactive isotope with a half life of 121 days.

We will use half-life formula to solve our given problem.

A=a\cdot (\frac{1}{2})^{\frac{t}{h}}, where,

A = Final amount.

a = Initial amount,

t = Time,

h = Half life.

Upon substituting our given values in above formula we will get,

A=24\cdot (\frac{1}{2})^{\frac{365}{121}}

A=24\cdot 0.1235760503818562

A=2.9658252091\approx 2.97

Therefore, 2.97 kg of W-181 will be left after 1 year.

qwelly [4]3 years ago
3 0
3 kg because one year is approximately 3 half-lives of W-181. The amount remaining would be 1/23<span> or 1/8. That is 3 kg of W-181.</span>
You might be interested in
acceleration is a(t) = 3t and velocity is v(t) = 1 at t = 1, what is the displacement from t = 2 to t = 4
lidiya [134]

Answer:

thanks for any information you are very important the answers to your questions are answered me about human

Step-by-step explanation:

you can make the direction of economics class is study about the answers the question

5 0
2 years ago
Write 40% as a fraction in simplest form.
professor190 [17]

Answer:

4/10

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
8. Don made deposits of $500 at the end of each year for eight years. The rate is 8% compounded annually. Using the tables found
Sonbull [250]

Answer:

Step-by-step explanation:

P = $ 500 ;r =8% ;  n= 8

A = P* (1+r/100)^n

A= 500 * ( 1 + 8/100)⁸

= 500 * ( 1 + 0.08)⁸  = 500 * 1.08⁸

=500*1.85

= $ 925.45

5 0
3 years ago
The length of a rectangular state park is 2 miles longer than twice the width. The area of the park is 84 square miles. What is
klasskru [66]

Answer:

Step-by-step explanation:

hello : look this solution

8 0
3 years ago
Brainliest 5 stars and worth 20 points, give me correct answers!!!
aniked [119]

Answer:

  • x² + x + 1 + 2/(x - 1)

Step-by-step explanation:

  • (x³ + 1) / (x - 1) =
  • (x³ - 1 + 2) / (x - 1) =
  • (x³ - 1)/(x - 1) + 2/(x - 1) =
  • (x - 1)(x² + x + 1)/(x - 1) + 2/(x - 1) =
  • x² + x + 1 + 2/(x - 1)
6 0
3 years ago
Other questions:
  • A survey of athletes at a high school is conducted, and the following facts are discovered: 59% of the athletes are football pla
    13·1 answer
  • Isosceles trapezoid ABCD has legs AB and CD and base BC. If AB=6y-6, BC=4y-7, and CD=7y-12, find the value of y.
    15·1 answer
  • You come home from Brian’s Orchard with a big brown bag of apples: 23 Granny Smiths, 14 Honey Crisp and 31 Red Delicious. What i
    15·1 answer
  • Please help me ASAP
    10·1 answer
  • How can the figure below be changed so that it has exactly one lines of symmetry?
    14·2 answers
  • A triangle has two angles that each measure 50° What is the measure of the third angle?
    11·1 answer
  • The online store charges a flat rate of $3.99 for shipping. Kelli is buying a book for $22.43. She could buy the same
    14·1 answer
  • Simplify<br> 5 x 5 squared
    12·2 answers
  • 20 is 1/10 (one tenth) of what number?
    14·1 answer
  • Simplify the expression <br> -17.8a-2.4a+25-19.5
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!