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
charle [14.2K]
3 years ago
15

Each isotope has a unique half-life. The half-life of an isotope is the time taken for half of the starting quantity to decay (w

ith a ratio of 1:1). After two half-lives, there will be one-fourth of the original parent sample and three-quarters would have decayed to the daughter product (with a ratio of 1:3). After three half-lives, the ratio becomes 1:7, and so forth.
A graph showing months on the x-axis and the amount of parent/daughter on the y-axis. The graph uses four pie charts to demonstrate how parent elements and daughter elements change with each half life for a sample in increments of 4 months.
The graph, for instance, shows that assuming the half-life of a sample is 4 months, then in 4 months, there will be 0.5 gram of the parent element and 0.5 gram of the daughter element will be produced. In month 8 (which is two-half-lives), there will be only 0.25 gram of parent element left and 0.75 gram of daughter element; that is, one-fourth of the parent sample (in red) is left, and in month 12, there is only one-eighth of the parent element.You attend a geology lab where you are asked to estimate the age of a fossil. The ratio of parent to daughter elements in the fossil sample is 1:7. You know that fossils are the remains of living organisms, which have some amount of C-14 isotope. The C-14 isotope, which has a half-life of 5730 years, begins to decay as the organism dies. What would be your estimation of the fossil's age?a. 2865
b. 17,190
c. 5730
d. 11,460
e. 40,110
f. 22,920
Chemistry
1 answer:
Tems11 [23]3 years ago
7 0

Answer:

b. 17,190

Explanation:

Using the formula for C-14 dating,

t=\dfrac{ln(\dfrac{N}{N_0})t_\frac{1}{2}  }{-0.693}

where Present Value N =1/8 of Parent Sample

Initial Value, N_0=1

Half Life, t_\frac{1}{2}=5730 years

t=\dfrac{ln(\dfrac{1/8}{1})5730}{-0.693}

=17,190

Therefore the fossil is about 17190 years old.

You might be interested in
Explain how balanced and unbalanced forces affect an object's motion differently.
Kazeer [188]
Newton's first law of motion is sometimes called the law of inertia. When the forces acting on an object are balanced, the object is either at rest or moving with a constant velocity. Unbalanced forces can cause an object to accelerate or decelerate. Unbalanced forces can also cause an object to change direction.
3 0
2 years ago
Which of the following statements is true about what happens in all chemical reactions? A. The ways in which atoms are joined to
antoniya [11.8K]

Answer:

B.bonds are broken and new bonds are formed

4 0
3 years ago
A stream leaving a mountain range deposits a large part of its load in a(n): alluvial fan sandbar meander sand dune
pshichka [43]

the answer to you question is alluvial fan

3 0
3 years ago
Read 2 more answers
How is it possible to have thousands of different proteins when there are only 20 different amino acids?
STatiana [176]
Hi there!

Although there are only 20 amino acids, these amino acids can combine into an innumerable amount of combinations to form different and unique proteins. 

In case that doesn't make sense to you, I'll provide you with an analogy. You could be provided with 20 different LEGO bricks to work with. While there may only be 20 bricks, these bricks can combine into a vast amount of different formations, structures, etc. Amino Acids work in the same way.
3 0
3 years ago
Why this process is called a cycle
Greeley [361]
<span>because it is a pattern; airgo cycle</span>
5 0
3 years ago
Read 2 more answers
Other questions:
  • Read the list of substances. Wood, Copper, Iron, Foam Which substances are good conductors of heat?
    13·2 answers
  • How is the movement of particles in diffusion determined?
    13·1 answer
  • How many atoms of phosphorus are in a 0.859 g sample?<br> Answer in units of atoms.
    10·1 answer
  • Place the following compounds in order of increasing vapor pressure. methane, CH4; pentane, CH3CH2CH2CH2CH3; 1-propanol, CH3CH2C
    5·2 answers
  • The density of a sample of gold is 19.32 g/cm'. If the sample has a volume of 48.9 cm', what is the mass?
    15·1 answer
  • Is Dry Ice a pure substance or a Mixture ?
    8·1 answer
  • When a counterfeit detection pen is used on an authentic bill, what color does it turn?
    15·1 answer
  • A puppy weight 7\18 pound and a kitten weight 4\9 pound Which weight more Explain​
    7·1 answer
  • Which of the below elements are part of a group? Feel free to use the periodic table.
    8·2 answers
  • Calculate the number of moles of H2 in 63.0g
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!