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
ivanzaharov [21]
2 years ago
10

'Polonium-210 is a radioactive substance with a half-life of 138 days. If a nuclear

Mathematics
1 answer:
Tatiana [17]2 years ago
5 0

Answer:

  • <u>59.0891 g (rounded to 4 decimal places)</u>

Explanation:

<em>Half-life time</em> of a radioactive substance is the time for half of the substance to decay.

Thus, the amount of the radioactive substance that remains after a number n of half-lives is given by:

  • A=A_0\cdot (1/2)^n

Where:

  • A is the amount that remains of the substance after n half-lives have elapses, and
  • A₀ is the starting amount of the substance.

In this problem, you have that the half-live for your sample (polonium-210) is 138 days and the number of days elapsed is 330 days. Thus, the number of half-lives elapsed is:

  • 330 days / 138 days = 2.3913

Therefore, the amount of polonium-210 that will be left in 330 days is:

  • A=310{g}\cdot (1/2)^{2.3913}=59.0891g
You might be interested in
In a class of 116 students, the number of boys is three times the number of girls. How many boys and how many girls are in the c
AVprozaik [17]
Hey there! :D

If there are 3 times as many boys than girls:

3+1=4

116/4= 29

29*3= 87

29*1= 29

There are 87 boys and 29 girls.

I hope this helps!
~kaikers
4 0
3 years ago
A fence is 692 m long. It is cut into three parts. Two parts are the same length, and the third part is 26 m longer than either
xenn [34]
One is 222
Two is 222
Three is 248
7 0
3 years ago
:. Solve for w. P = 2(1 + w)
iragen [17]

answer : 1 = P/2 - 2

6 0
2 years ago
Read 2 more answers
Ryan spent $26.32 on 8 gallons of gas. How much would he spend for 20 gallons?
nalin [4]
$65.80

$26.32/8=$3.29 for a gallon
$3.29 x 20 = $65.80.

Hope this helps
4 0
3 years ago
Read 2 more answers
HELP!!!!!!!!! I’m almost done
balandron [24]

Alright, we're in the home stretch here :) All you need to remember is that i² = -1. Otherwise, it is the same as FOIL


(3-2i)(1+7i)

3-2i+21i-14i² ← Replace the i² with -1, then simplify like numbers

3+19i+14

17+19i or C

8 0
3 years ago
Other questions:
  • What is the probability of landing a 3 or 9? Write your answer as a reduced fraction
    11·1 answer
  • at 7 p.m. the temperature is 72 degrees F at 10 p.m. it is 52 degrees find the average rate of change in temperature
    10·1 answer
  • This quadratic function has been factored, please give tge solutions. 4x(x+4)=0
    15·2 answers
  • Simplify the expression
    15·1 answer
  • What is the graph of y=-x+2
    9·2 answers
  • What is g(x)?<br> A. g(x) = -x<br> B. g(x) = -2<br> C. g(x) = -1<br> D. g(x) = x²
    14·1 answer
  • (GIVING BRAINLIEST!!!)
    15·2 answers
  • Plss join really bored <br><br> ID 852 183 4117 <br> code WKJV5p
    7·1 answer
  • (2i)/(3-5i) HELP ASAP --- algebra 2 question
    15·1 answer
  • If the following rectangular prism's width is doubled, what will happen to the volume?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!