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
Free_Kalibri [48]
2 years ago
6

After two half-;ives (9 billion years) what percent of the orignal uranium remains?

Biology
1 answer:
Colt1911 [192]2 years ago
3 0

The percentage of the orignal uranium that remains after two half-lives is 25%

<h3>Data obtained from the question </h3>
  • Original amount (N₀) = 100%
  • Number of half lives (n) = 2
  • Percentage remainig (N) =?

<h3>How to determine the percentage remaining</h3>

N = N₀ / 2ⁿ

N = 100 / 2²

N = 100 / 4

N = 25%

Thus 25% of the original sample remains

Learn more about half life:

brainly.com/question/26374513

#SPJ1

You might be interested in
Alcohol dehydrogenase (ADH) is an enzyme that aids in the decomposition of ethyl alcohol (CH3OH) into nontoxic substances. Methy
Thepotemich [5.8K]

Answer:

d. Competitive inhibition will decrease because the proportion of the active sites occupied by substrate will increase.

Explanation:

Enzymes are bio catalysts in living cells responsible for aiding biochemical reactions.

Their active sites are primary protein  3D structure  for binding with substrates during   reactions.

Enzymes reactions are usually affected by inhibitors(e.g methyl alcohol) which compete with the active site with the actual substrate(ethyl alcohol) ,

This is an example of competitive inhibition. The more ethyl alcohol available, the more active sites  occupied, therefore denying the inhibitor methylalchol  chances to the active site, thus preventing the formation of toxic formaldehyde, and more of non toxic substances from formation of more ADH-METHYL ALCOHOL COMPLEXES at the active sites

8 0
3 years ago
Why do the other planets take longer to orbit the Sun than the inner planets do​
Zepler [3.9K]

Answer:

Outer planets take longer to orbit than inner planets because of the greater distance they need to cover. They also are further from the sun weakening the power of the suns gravitational pull which causes then to orbit slower.

Explanation:

!!

5 0
3 years ago
Read 2 more answers
Efectos de la forestación
Snezhnost [94]

Answer:

La deforestación tiene muchos efectos negativos para el medio ambiente. Uno de los mayores impactos es la pérdida del hábitat de millones de especies. Setenta por ciento de los animales y plantas que habitan los bosques de la Tierra no pueden sobrevivir a la deforestación que destruye su medio.15 nov. 2017

Explanation:

i hope it help you ;)

7 0
3 years ago
For a conclusion to be accepted by the scientific community, the data must be accurate, free from error, and
kolezko [41]
The data has to be verifiable by the scientific community.
5 0
3 years ago
If the rice already had the genes that could make vitamin A, why did scientists use genes from other organisms?
meriva

Answer:

A. The rice genes didn't make the right type of vitamin A.

Explanation:

Regular white rice does not have the gene to produce beta carotene. The human body converts the beta carotene into vitamin A.

To increase the nutritional value of rice, the gene for beta carotene from daffodil flowers was inserted into the cells of endosperm of rice.

This allowed these cells of the genetically engineered rice varieties to produce beta carotene. Production of beta carotene imparted golden color to the rice grain and hence, the name.

7 0
3 years ago
Other questions:
  • What makes an endospore so resistant?
    10·1 answer
  • What’s the answer.......
    9·1 answer
  • Which of the following is considered an arid biome? a. grassland b. desert c. savanna d. rainforest Please select the best answe
    13·2 answers
  • Do sharks have bad vision​
    10·1 answer
  • What is NOT a major use of sardines once they are caught<br> commercially?
    14·2 answers
  • (n) _____ plant lives partially in and out of the water. a(n) _____ plant lives entirely underwater.
    9·1 answer
  • Prairie dogs are burrowing rodents that live in grasslands. What makes the prairie dog a keystone species in the ecosystem?
    14·2 answers
  • Fish lay thousands of eggs in one reproductive cycle. What are some factors that prevent the majority of these eggs from develop
    13·1 answer
  • The xylem is made from ________. the xylem is made from ________. elongated living cells intercellular spaces between cells tubu
    8·2 answers
  • Where does the carbon comes from that makes up the glucose molecule?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!