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
AURORKA [14]
3 years ago
8

Astatine-210 has a half-life of 8.08 days. What fraction of a sample of astatine-210 is left unchanged after 16.16 days?

Chemistry
1 answer:
Flauer [41]3 years ago
6 0

Answer:

0

Explanation:

Given parameters:

Half-life  = 8.08days

Unknown:

What fraction is left unchanged after 16.16days = ?

Solution:

The half - life of a substance is the time taken for the half of a radioactive material to decay to half.

 

  Day 0           Day 8.08         Day 16.16

   100%                 50%                 0%        Parent

    0%                     50%                100%     Daughter

After 16.16 days, non of the original sample will remain unchanged.

You might be interested in
Why can metals be extracted using carbon
8090 [49]
If a metal is less reactive than carbon, it can be extracted from its oxide by heating with carbon. The carbon displaces the metal from the compound, and removes the oxygen from the oxide. This leaves the metal.
5 0
2 years ago
True<br> or False: A force has to touch an object in order to affect it.<br> Hellppp
lesantik [10]
False :) :) :) :) :) :) :)
8 0
4 years ago
During electrophilic aromatic substitution, a resonance-stabilized cation intermediate is formed. Groups, already present on the
DIA [1.3K]

Answer:

See explanation and image attached

Explanation:

Aromatic compounds undergo electrophilic aromatic substitution reactions in which the aromatic ring is maintained.

Substituted benzenes may be more or less reactive towards electrophilic aromatic substitution than benzene depending on the nature of the substituent present in the ring.

Substituents that activate the ring towards electrophilic substitution such as -OCH3 are ortho-para directing.

The major products of the bromination of anisole are p-bromoanisole and o-bromoanisole. The resonance structures leading to these products are shown in the image attached.

5 0
3 years ago
What compounds are classified as electrolytes?
Kitty [74]
1- KNO3 and H2SO4. electrolyte is a liquid that consists of ions, which decomposes during the process of electrolysis, electrolytes will dissolve in liquids, like water. Since KNO3 and H2SO4 both dissolve in water, they are the right answer
5 0
3 years ago
What is the answer to this question?
lord [1]
The answer is D.

The atomic number stands for the number of protons in each element. The number of protons is what is unique to each element. The number of neutrons varies; this is what isotopes are. The number of protons being the atomic number explains why the atomic number is an identifying characteristic of each element.
8 0
3 years ago
Other questions:
  • A toaster transforms electrical energy into _____ energy and _____ energy. A. heat; light B. heat; kinetic C. heat; potential D.
    12·1 answer
  • Which type of radiation particle, emitted from a nuclear reaction, is most similar to a helium nucleus?
    7·2 answers
  • Help I need to show work!
    10·1 answer
  • What does it mean for a weak acid to be in equilibrium?
    5·1 answer
  • Classify each property as a physical property or a chemical property.
    8·1 answer
  • An electron has a charge identical to that of
    7·1 answer
  • Ice cubes are placed on a table in a warm room. What happens to the ice particles?
    9·1 answer
  • Are hybrids made by natural selection or artificial selection?
    7·1 answer
  • Using stoichiometry, you predict that you should be able to use 314.0 g of Al to produce 1551 g of AlCi3. In your lab
    8·1 answer
  • At what temperature does ice start to melt
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!