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
galben [10]
3 years ago
12

A 20.0 gram sample of a certain radioisotope decays over a

Biology
1 answer:
VLD [36.1K]3 years ago
5 0

quantity of the substance remaining = initial quantity of the substance * (.5)^(time elapsed/half life of the substance)

2.50 = 20 * (.5)^(19.2/x)

You might be interested in
The thermostat in a house regulates heat. When the air in a room reaches a predetermined temperature, the thermostat turns off t
Alina [70]
That would be an example of negative feedback:)
5 0
3 years ago
Read 2 more answers
Although carbon dioxide emissions are reduced, geothermal power plants release odor pollution that smells like rotten eggs. True
geniusboy [140]
The correct answer is true. I really hope this helps!

8 0
3 years ago
Read 2 more answers
In Wisconsin, a very large population of lake trout, in which individuals mate at random, experiences no migration, mutations, n
Pavlova-9 [17]
In this kind of population, the make up of the population's gene pool will remain virtually the same as long as these conditions hold. In this kind of situation, no evolution can take place, all thing will remain the same. For evolution to occur, competition must exist.
6 0
3 years ago
Which of the phyla has bilateral symmetry?
Svetach [21]
Arthropods has the bilateral symmetry !
so answer is B !
6 0
3 years ago
Read 2 more answers
Refer to Animation: Countercurrent Multiplication. What would you predict to be the effect on an animal species of having longer
attashe74 [19]

Answer:

The correct answers is: I would predict that animals with longer loops of Henle would be able to concentrate their urine more than animals with shorter loops, and thus they would more likely survive in desserts and other dry areas.

Explanation:

The<em> Loop of Henle</em> is a tubule system that connects the proximal convoluted tubule to the distal convoluted tubule in a nephron, the functional and structural unit of the kidney. Its primary job is to establish a concentration gradient in the kidney's medulla by creating a high urea concentration deep in the medulla using a countercurrent multiplier system that uses electrolyte pumps. Through this mechanism, <u><em>water is reabsorbed to concentrate the urine and impede dehydration</em></u>.

The length of the loops of Henle is of great importance for the countercurrent multiplier system - <u>the longer they are, the more concentrated the urine can get</u>. Therefore, animals with longer loops can survive better in habitats where there is not much water around.

6 0
3 years ago
Other questions:
  • Help, can someone please check my answers for my three questions? I will fan and will also give a medal.
    11·2 answers
  • What type of bond holds the amino acids together in the proper sequence at the ribosome?
    7·1 answer
  • Mikael runs with a speed of 3 m/s of 45 seconds . How far does mikael run
    13·2 answers
  • When a solid changes dirictly into a gas a change called occures
    11·2 answers
  • DNA Replication:<br><br> When does the chromatin uncoil?
    5·1 answer
  • Is the following true or false? Ascomycetes make up the largest phylum in the kingdom fungi.
    10·2 answers
  • Which of the following is a renewable resource used for human needs?
    8·2 answers
  • 7.
    8·1 answer
  • Look at the diagrams modeling some of the body systems.
    6·2 answers
  • A particular triplet of bases in the template strand of dna is 5' agt 3'. The corresponding codon for the mrna transcribed is
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!