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
Ierofanga [76]
2 years ago
14

Potassium has a half-life of 12 hours. What fraction of a 100g sample is left after 48 hours

Biology
1 answer:
EastWind [94]2 years ago
4 0

Answer:

After 48 hours amount left = 6.25 g

Explanation:

Given data:

Half life of potassium = 12 hours

Total mass = 100 g

Mass left after 48 hours = ?

Solution:

Number of half lives passed:

Number of half lives = Time elapsed / half life

Number of half lives = 48 hours/ 12 hours

Number of half lives = 4

At time zero = 100 g

At first half life = 100 g/ 2 = 50 g

At 2nd half life = 50 g/2 = 25 g

At 3rd half life = 25 g/2 = 12.5g

At 4th half life = 12.5 g/2 = 6.25 g

You might be interested in
If an IV has 4% salt, and the patient's cells have 6% salt are the patient's cells
kumpel [21]

Answer:

6

Explanation:

If an IV has 4% salt, and the patient's cells have 6% salt are the patient's cells

hypotonic, isotonic or hypertonic compared to the IV? Will the cell swell, shrink,

or stay the same? Will the cell gain water, lose water, or no net gain or loss of

water?

5 0
2 years ago
The process of what adds a phosphate group to adp creating atp?
lara31 [8.8K]

Answer:

The conversion of ADP to ATP can be written as ADP + Pi + energy → ATP or, in English, adenosine diphosphate plus inorganic phosphate plus energy gives adenosine triphosphate.

7 0
3 years ago
What is the function of the organs of the digestive system
ohaa [14]

Answer:

The digestive system is a collection of organs that work together to digest and absorb food. Digestion is the process your body uses to break the foods you eat down into molecules your body can use for energy and nutrients. The following organs work together to help your body process the foods you eat.

3 0
3 years ago
Predict the genotypic and phenotypic ratios for the Punnett square from scenario 1. What is the probability of two individuals w
Svet_ta [14]

Answer:

In the most common forms of oculocutaneous albinism, both parents must carry the albinism gene for a child to be born with the condition. Even if both parents carry the gene, the chance of each of their children being born with albinism is one in four.

4 0
2 years ago
what is most likely effect of nonnative of Burmese pythons outcompeting native species in the Florida Everglades​
nataly862011 [7]

loss biodiversity is the answer(apex)

6 0
2 years ago
Read 2 more answers
Other questions:
  • Which is not an example of someone maintaining homeostasis
    15·2 answers
  • Human 100 Rhesus Monkey 95 Mouse 87 Chicken 69 Frog 54 Lamprey 14 The information contained in the table could be used _________
    14·2 answers
  • What does the fiber in diet pills do? it satisfies a person's normal daily fiber requirement. it has been clinically demonstrate
    15·1 answer
  • What will happen to DNA sequence variation in the regions of the genome immediately adjacent to an allele undergoing a selective
    11·1 answer
  • Which hemisphere controls non-verbal processing including spatial, musical, and visual tasks?
    14·1 answer
  • Living organisms are made up of cells. Cells are organized at different levels to form very complex living organisms like your b
    12·2 answers
  • Which of the following is a possible long-term consequence of two organisms occupying the same niche?
    7·1 answer
  • A city is most likely to experience a change in weather under which of the following conditions?
    8·1 answer
  • Water has the ability to dissolve salts and carry dissolved carbon dioxide. How does
    12·1 answer
  • Identify which molecules the bag is permeable and impermeable to. Justify your answer.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!