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

what would the percentage of thorium-232 ( parent compound) be in a rock that was dated at 1.8 billion years

Chemistry
1 answer:
vovikov84 [41]3 years ago
7 0

The half-life of Th-232 is 1.405 × 10¹⁰ years  

Time elapsed = 2.8 x 10⁹ years  

Equation of radioactive decay:

A = A₀ = (1/2)^ t/t₁/₂

Thus, the percentage of thorium-232 in the rock that was dated at 2.8 billions year = 87.1%

You might be interested in
What is a precipitate?
Mariulka [41]
Answer: 1) A solid product of a chemical reaction that is in aqueous form.
6 0
3 years ago
Which of the following is an inexhaustible energy resource?
koban [17]
<u />C. Water is an inexhaustible energy resource among these options. Coal, oil, and natural gas we can run of, but for the foreseeable future, there will always be water.
4 0
2 years ago
Please Answer ASAP !
amid [387]

Answer:

2.0x 10-2M

Explanation:

x2/[2.0x10-2]2 [1.0x10-2] =100

5 0
2 years ago
What are 2 scientist classify organisms into groups
GalinKa [24]
Because their different
3 0
2 years ago
When she dropped a rock into a graduated cylinder of water, Veronica noticed it sank to the bottom. She decided to investigate w
Romashka [77]
A is correct. water is incompressible, so it will always have the same density, regardless of volume
8 0
3 years ago
Read 2 more answers
Other questions:
  • What would the volume (L) of 6.6 g of CO2 be if it were measured at the same temperature and pressure as that of the experiment
    11·1 answer
  • Explain the difference between plant and animals cells in 4 sentences.<br><br> 15 points!
    7·1 answer
  • What is the volume of a diamond with a mass of 0.25 g?
    15·1 answer
  • In the following reaction, when a surplus of hydrazine (N2H4) reacts with 20 liters of hydrogen peroxide (H2O2), how many liters
    11·2 answers
  • The model below represents a nuclear reaction. Atom 1 is present before the reaction and Atom 2 and Atom 3 are produced after th
    11·2 answers
  • What do scientists use to answer scientific questions?
    9·1 answer
  • PLEASE HELP I AM FAILING SCIENCE!!!
    13·1 answer
  • i will give brainly to correct answer (if you dont get brainly lmk if you want me to make a fr33 p01nts post so i can give you i
    9·2 answers
  • AUG, the codon that codes for the amino acid methionine is also called a ____ codon (answer choices 1.start 2.Stop 3.Go 4.beginn
    6·1 answer
  • As energy moves out from the sun’s core toward its surface, it first travels by __________, then by __________, and then by ____
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!