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
Aneli [31]
3 years ago
14

The isotope silicon 32 decays into phosphorus 32. Silicon 32 has a half-life of 170 years and can be used to find the age of roc

ks it is contained in. Which two statements are true regarding this scenario?

Geography
1 answer:
eduard3 years ago
5 0

Answer:

B and C

Explanation:

B. In a given rock sample, the amount of Silicon-32 isotopes gets divided in half about every 170yrs.

This is the concept of half-life. Half life is the time take for half of a radioactive isotope to disintegrate. The shorter the half life the faster the isotope disintegrates.

From the question, we were told that it would take 170yrs for half of the isotope of Silicon to disintegrate to Phosphorus. This is the half life.

C. The half life can be used to determine the amount of Si-32 that has decayed from the time closure temperature was reached.

The closure temperature is very important in radioactivity. It is the temperature at which a system has cooled and there is no resulting disintegration of parent and daughter isotopes.

From first order kinetics, we know that the rate at which radioactive elements decay at any time is directly proportional to the number of radioactive atoms present. A knowledge of the half life helps to figure out the number of atoms that has decayed in time.

You might be interested in
What is the main reason the Earth is warmer at the equator than at the North and South Poles?
dmitriy555 [2]
The main reason why Earth is warmer at the equator than at the North and South Poles are thats where the sunlight shines at a lot of times. The sunlight never really shines directly at the North and South Poles like it does with the equator.
7 0
3 years ago
Read 2 more answers
From their redshifts, calculate the speed at which each of the galaxies is moving away from us. give your answers in km/s.
wel
The math suggests that for every parsec the rate of moving away is 71 km/s, so when two galaxies are separated by two parsecs we come to 142 km/s speed of moving away from each other. If we take the first light ever (from what is known so far) the cosmic microwave radiation, is 46 billion light-years away from us at all directions, which comes at 4,200 megaparsecs, which comes at 13.7 billion light-years, so it will come to 29,820,000 km/s. It all depends from the distance between the galaxies which is calculated by their type of colour and movement in comparison to other galaxies.
3 0
3 years ago
Which examples characterize contemporary culture in the Andean and midlatitude countries?
bogdanovich [222]

Answer:

It's A And D

Explanation:

7 0
3 years ago
What is the other name for doldrum​
maxonik [38]

Answer:

Doldrums, also called equatorial calms, equatorial regions of light ocean currents and winds within the intertropical convergence zone (ITCZ), a belt of converging winds and rising air encircling Earth near the Equator.

4 0
3 years ago
The map shows the average high temperatures in July for two cities in Texas. What is the most likely explanation for the differe
Mila [183]

Answer: D

Explanation: just took the test :)

4 0
3 years ago
Read 2 more answers
Other questions:
  • All of the following are zones of the sandy beach except:. A. surf zone . B. intertidal zone . C. backshore zone Incorrect . D.
    7·2 answers
  • Where would you find the largest difference in shallow and deep ocean temperatures?
    8·1 answer
  • What is an example of reterriorialization
    10·1 answer
  • How does the movie chasing corals relate to the 5 themes of geography​
    7·1 answer
  • How has the region attempted to change its future so that they will be less dependent on oil wealth in the coming decades?
    12·1 answer
  • Describe a similarity between the relative location and the situation of a large<br> sports stadium.
    15·1 answer
  • Paleomagnetism is the study of the ____________________ magnetism in rocks. When magma cools, the magnetic iron-bearing minerals
    10·1 answer
  • Why is still water an ideal environment for the formation of mold and cast fossils? NEED HELP NOW WILL MARK BRAINLIEST
    11·2 answers
  • Question 2 of 10
    13·1 answer
  • Which is a major drawback to the use of hydrogen power?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!