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
const2013 [10]
3 years ago
14

A meteor contains 0.556 g of pb-206 to every 1.00 g of u-238. assuming that the meteor did not contain any pb-206 at the time of

its formation, determine the age of the meteor. u-238 decays to pb-206 with t1/2 = 4.5 x 109 y
Chemistry
1 answer:
vivado [14]3 years ago
5 0
Answer is: 2,94·10⁹ years.
m(Pb) = 0,556 g.
n(Pb) = m÷M = 0,556g÷206g/mol = 0,0027mol.
m(Au) = 1,00g.
n(Au) = 1g÷238g/mol =0,0042mol.
n(Pb)/n(Au) = 0,575
t1/2 = 4,5·10⁹ years.
λ = 0,693÷t1/2, λ = 0,693÷4,5·10⁹ = 0,154·10⁻⁹.
λ-decay constant
Use this formula: λ·t = ln(1+ n(Pb)/n(Au)
ln - <span>natural log.
</span>t = 0,453÷0,154·10⁻⁹ = 2,94·10⁹ years.


You might be interested in
Astatine belongs to which element group: nonmetal, halogen, noble gas?
Mkey [24]

Answer:

halogen

Explanation:

It belongs to Group 17 on the periodic table, which is a halogen

8 0
3 years ago
Dr. Garcia is performing an experiment to see how cell division in flies is affected by the addition of a certain protein, calle
Paha777 [63]
<span>Dr. Garcia should compare fly cells to human cells.
</span>
3 0
3 years ago
Read 2 more answers
I’m driving down the highway at 75.0 miles/hour, how fast is that in m/seconds?
Aliun [14]

Answer:

1.25 miles/ 1 minute

60x1.25=7.50

Explanation:

4 0
3 years ago
Physical Science Structures and Properties of Matter Portfolio
daser333 [38]

Answer:

true

Explanation:

8 0
3 years ago
Where are earthquakes and tsunamis more common and why?
Keith_Richards [23]
Tsunamis are the largest waves in the world. The edges of the plates, where earthquakes and volcanoes often occur, usually lie near the edges of the oceans
4 0
2 years ago
Read 2 more answers
Other questions:
  • What are three every day devices that could not have been developed without the discovery of electromagnetism
    12·1 answer
  • How much H2 is generated from the electrolysis of 150 grams of H2O
    8·1 answer
  • What Is the difference between organic and inorganic matter?
    10·2 answers
  • Which property indicates how light is reflected from a mineral’s surface?
    5·2 answers
  • What is Keystone XL pipeline?
    7·1 answer
  • Does lithium lose or gain valence electrons? and how much?​
    14·1 answer
  • What is the unit of measurement for temperature?<br> Solve for V2<br> 290L/ 23C = V2/ 16C
    5·1 answer
  • A bond formed between Iron and Chlorine would<br> result in what type of bond?
    14·1 answer
  • 1. Calculate the resistivity of the given material whose resistance is 2Ω, length and area of cross section are 15 cm and 25cm²
    10·1 answer
  • Describe the two methods of active transport.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!