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
andrew-mc [135]
2 years ago
14

When a living organism dies, it stops taking in new carbon. Thus, as the radioactive carbon-14 decays, the ratio of carbon-12 to

carbon-14 increases. The half-life of carbon-14 is 5,700 years. If you have a fossil that contains only 25% of the carbon-14 of a living organism, how old would you estimate this fossil would be?
Biology
1 answer:
Alexxandr [17]2 years ago
4 0

Answer: The fossil is 11459 years old.

Explanation:

Half-life of carbon-14 = 5700 years

First we have to calculate the rate constant, we use the formula :

k=\frac{0.693}{5700\text{years}}

k=1.21\times 10^{-4}\text{years}^{-1}

Now we have to calculate the age of the sample:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = 1.21\times 10^{-4}\text{years}^{-1}
t = age of sample  = ?
a = let initial amount of the reactant  = 100 g
x = amount decayed = 75 g
a - x = amount left after decay process  = 100 - 75 = 25 g  Now put all the given values in above equation, we get
[tex]t==\frac{2.303}{1.21\times 10^{-4}}\log\frac{100}{25}

t=11459years

The fossil is 11459 years old.

You might be interested in
Explain the relationship between photosynthesis and Cellular Respiration. In one sentence.
irinina [24]
Photosynthesis and Cellular Respiration are complete opposite of on another but are also a complementary process.
4 0
2 years ago
Which type of organism is used in toothpaste, but can also cause malaria?
tresset_1 [31]

Answer:

Protista (or protists) are found in toothpaste, and can possibly cause malaria

5 0
2 years ago
What role do enzymes play in metabolism?
vredina [299]
Enzymes speed up chemical reactions within the body, including reactions in metabolism
4 0
3 years ago
Read 2 more answers
What happens to the speed of light as it exits the air and enters a glass of water?
neonofarm [45]

Answer:

I believe its D

Explanation:

because why would it slow down or speed up

5 0
2 years ago
In knowledge-based economies, education plays an important role in the lives of citizens and is an important factor in their qua
ELEN [110]

Answer:

B

Explanation:

Just did the assignment and buddy got me wrong

3 0
3 years ago
Other questions:
  • The ________ is the part of the brain with dense connections with a variety of sensory areas of the brain; it is critical for cl
    15·1 answer
  • Why does sickle-cell hemoglobin (HbS) migrate slower than normal hemoglobin (HbA) during gel electrophoresis?
    6·1 answer
  • Identify at least six different types of private healthcare facilities
    9·2 answers
  • How many neuromuscular junctions are in each muscle cell
    10·1 answer
  • An unmanned spacecraft leaves for Venus. Which statements about the spacecraft’s journey are true?
    14·2 answers
  • Qué pasaría si la célula el ADN se destruye?
    6·1 answer
  • Hyftgyujikolp;hflgjhklpo[h
    7·2 answers
  • In the beginning of prophase the DNA coils back up and​
    14·2 answers
  • Joe has heard that fertilizer makes tomato plants produce more tomatoes and bigger tomatoes. He decides that he wants to find ou
    11·1 answer
  • Cylindrical bacterial cells are called , whereas gently curved cylindrical cells are referred to as .:_________
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!