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
steposvetlana [31]
3 years ago
14

a scientist kept 500 grams of a radioactive material in a container. after 60 minutes, he observed that 62.5 grams of the radioa

ctive material was left in the container. based on the observation, which of these is the most likely inference drawn by the scientist?
Biology
1 answer:
Gnoma [55]3 years ago
7 0
After the 1st half-life 250 g of the radioactive material will be left. 
<span>After the 2nd half-life 125 g of the radioactive material will be left. </span>
<span>After the 3rd half-life 62.5 g of the radioactive material will be left. </span>

<span>Therefore after 60 minutes, 3 half lives would have occurred. </span>

<span>Therefore the half-life = 60 / 3 = 20 minutes when 250 grams of the original material would have remained radioactive. </span>

<span>Therefore the answer is A) About 250 gram of the material decayed in 20 minutes.</span>
You might be interested in
Describe in detail how gases are exchanged between the respiratory system and the circulatory system in the lungs
charle [14.2K]

Answer:

Gas exchange

Explanation:

Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.

4 0
3 years ago
Hydrogenotrophy is Choose one: A. the oxidation of water during photosynthesis to liberate electrons, protons, and oxygen gas. B
NikAS [45]

Answer:the answer will be b

Explanation:

3 0
3 years ago
Which structure conducts photosynthesis?<br> a. Stem<br> c. Roots<br> b. Leaves<br> d. Both a and b
suter [353]
Leafs do photosythesis because leafs absorb blue and red light and reflect green just an aditional fact for ya
7 0
3 years ago
Please help
notka56 [123]

Answer:

The answer is option D

Codons

Hope this helps you

3 0
3 years ago
Identify the relationship between structure and function of an organism and a cell:
tangare [24]

In multicellular organisms, the shape of the cell helps determine its function. For example, red blood cells are donut-shaped to easily exchange oxygen and freely pass through narrow blood vessels while nerve cells are long so when connected to other nerve cells they can span long distances in the organism

8 0
3 years ago
Other questions:
  • Which of the following would be produced by meiosis? red blood cell cells of the stem in plants sperm cell epithelial cell User:
    9·2 answers
  • What event was most responsible for the U.S. Congress's passing the National
    10·1 answer
  • What is being duplicated in the first phase of photosynthesis
    10·1 answer
  • Attractions between water molecules are called:
    11·1 answer
  • The individuality of an organism is determined by the organism's
    10·2 answers
  • What is the difference between endocrine and exocrine glands?
    14·1 answer
  • Cyanide is known to inhibit the flow of electrons along the electron transport chain. How would exposure to cyanide affect the p
    15·1 answer
  • Whoever is good with biology help me please and thank you
    12·2 answers
  • Animals in Cestoda have: Group of answer choices septa and parapodia proglottids and no digestive system a pharynx and gastrovas
    7·1 answer
  • Langkah-langkah menjaga Alam sekitar? Dalam bentuk huraian.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!