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
olchik [2.2K]
3 years ago
12

How much of a 100 gram sample of gold-198 is left after 810 days if it’s half life is 2.7

Biology
1 answer:
Juliette [100K]3 years ago
7 0

Answer:

mass₁=100.0g

time₁=2.70 days

mass₂=x

time₂=8.10 days

8.10/2.70 = 3

100/2 = 50/2 = 25/2 = 12.5 g

x=12.5 g

You might be interested in
What structure surround and protect the cell?
VMariaS [17]
The structure that surround and protect the cell depends on the cell type: for plants cells it would be a cell wall whereas for an animal cell it would be the cell membrane :)
6 0
3 years ago
What does physical Science Focus on?
tamaranim1 [39]

Answer:

Physical science is the study of the inorganic world. That is, it does not study living things.

Explanation:

<h3>Hope it helps!! </h3>
8 0
3 years ago
Signs and symptoms of tuberculosis​
Katen [24]

<u>Typical symptoms of TB include:</u>

  • a persistent cough that lasts more than 3 weeks and usually brings up phlegm, which may be bloody.
  • weight loss.
  • night sweats.
  • high temperature.
  • tiredness and fatigue.
  • loss of appetite.
  • swellings in the neck.
5 0
3 years ago
Read 2 more answers
Which hypothalamic hormone contributes to the regulation of the male reproductive system? a. luteinizing hormone b. gonadotropin
Lostsunrise [7]

Answer:

The correct answer is option b. gonadotropin-releasing hormone.

Explanation:

The GnRH or the gonadotropin-releasing hormone is a releasing hormone that releases from the neurons of the hypothalamus. This releasing hormone is responsible for the secretion of the luteinizing hormone and follicle-stimulating hormone.

GnRH regulates both gonadotropin hormones, in which, LH (luteinizing hormone) responsible for the regulation of the male reproductive system and FSH (follicle-stimulating hormone) responsible for the female reproductive system and sperm production in testes in males.

Thus, the correct answer is option B. gonadotropin-releasing hormone.

3 0
3 years ago
You have to choose between playing a team sport and taking music lessons because the practices overlap. what economic concept do
trapecia [35]

Time is scare is the economic concept this dilemma demonstrate.

<h3>Why Time is scare?</h3>

The time is scare because there is an over lap between the team sport or doing the music instruction. This demonstrates that there is not enough time to meet demand.

Two of the tasks require more time than is available. Both team sports and music courses cannot be played because of the lack of time.

Although there is a strong need for time, two things cannot happen at once. The need for time is great, but there is nothing one can do about it; she must choose between the two options presented.

To learn more about Time is scare visit:

brainly.com/question/16246314

#SPJ4

7 0
2 years ago
Other questions:
  • What does the mitochondria do in an animal cell?
    13·1 answer
  • A stroke in the primary motor area has caused don to lose control over his skeletal muscles on the right side of his body. what
    9·1 answer
  • Which of the following statements about weather along mountain ranges is correct?
    7·1 answer
  • :3<br> what is the biggest cat in the world?
    9·2 answers
  • Few drugs are prescribed during pregnancy, particularly during the ________ trimester because of the increased risk of causing b
    14·1 answer
  • Which of the following pairs of organisms is most closely related?
    14·1 answer
  • A force acting on an object cause some properties of the object to changed.Which list contains only properties that can be chang
    8·1 answer
  • Multiple Choice
    12·1 answer
  • ⚠️PLZ HELP⚠️
    11·1 answer
  • The diameter of a carbon atom is 2.2 × 10 -8cm. Write this as a whole number. (please help. i will give brainliest)
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!