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
Svetradugi [14.3K]
3 years ago
14

Assume you began with 10 g of a radioactive parent isotope. How many grams of parent isotope will be present in the sample after

2 half-lives?
Biology
2 answers:
Anna11 [10]3 years ago
5 0

Answer:

2.5 grams

Explanation:

In radioactive decay, one half-life is the time it takes for half of the radioactive sample to decay. So if it takes two hours (for example) for a sample to go from 8 grams to 4 grams, then one half-life has passed (since half the sample has decayed), and the half-life is two hours.

<u>Calculation:</u>

2 half-lives = sample halved twice

10 grams / 2 = 5 grams (one half-life has passed)

5 grams / 2 = 2.5 grams (two half-lives have passed)

9966 [12]3 years ago
3 0
2.5g

10÷2=5
5÷2=2.5

everytime it completes a half life, you divide the number by two
You might be interested in
What is conditioning? Give one example.
sweet-ann [11.9K]

Answer: it is working out by doing exercises that quickly accelerate your heart rate

Explanation:

A good example is running on a treadmill or jump and jacks

4 0
3 years ago
Which describes a function of plasmodesmata? They store glucose made during photosynthesis. They store water and collect poisons
erik [133]

C im perdy sure hope to help

5 0
3 years ago
Read 2 more answers
Assume that an organism exists in which crossing over does not occur, but that all other processes associated with meiosis occur
Shtirlitz [24]

Answer and Explanation:

Greetings!

Let's~answer~your~question!

<em>Q1. Assume that an organism exists in which crossing over does not occur, but that all other processes associated with meiosis occur normally. Consider how the absence of crossing over would affect the outcome of meiosis.</em>

→ There~ would ~be~ less~ genetic ~variation~ among ~gametes.

Thus,~making~statement~``e"~correct!

Hope~this~helps!~Have~a~blessed~day~ahead!

-Isabelle~Williams

5 0
3 years ago
What is the answer to this question
vova2212 [387]
The answer is "protein"
3 0
3 years ago
Plesse hurry <br><br><br> Jaunty is the antonym of inactive <br><br><br><br> Please hurry
ICE Princess25 [194]

Answer:

No it means lively

Explanation:

7 0
2 years ago
Other questions:
  • Genetic discord are diseases or conditions caused by abnormal or mutations in our genes.
    9·2 answers
  • A series of programmed changes encoded in dna, through which a fertilized egg divides into many cells that ultimately are transf
    5·1 answer
  • Which organ produces estrogen and progesterone?
    15·2 answers
  • Metabolism is _____.
    13·1 answer
  • What does it mean if there are two different alleles for a trait?
    12·1 answer
  • Consider two soil samples one from a tropical rain forest and the other from a temperate deciduous forest. Predict which sample
    14·1 answer
  • Whoever knows how to fill out a taxonomic key Hmu with social media because I really need help
    13·1 answer
  • Use the graph to answer question 1.
    11·1 answer
  • What is the answer to this question if anybody knows i’m really finding it confusing
    9·1 answer
  • Pls help asAP PLS❗❗❗❗❗❗❗❗❗❗❗❗❗❗
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!