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
Assoli18 [71]
3 years ago
6

After 4 half-lives have elapsed, the amount of a radioactive sample which has not decayed is

Chemistry
1 answer:
ra1l [238]3 years ago
3 0

The answer gonna be: 1/2^n = 1/2^4 = 0.0625

So, 6.25% sample has not decayed yet!!!

You might be interested in
Phosphorous pentchloride (pcl5 ) is used as a chlorinating reagent in chlorination of organic compounds. what type of bonding oc
schepotkina [342]

<span>The type of bond that a Phosphorous pentachloride have is an Ionic Bonding. It is a form of chemical bond that encompasses the electrostatic attraction between oppositely charged ions which serves as the primary interaction happening in ionic compound. Phosphorus has 5 valence electrons and Chlorine has 7 valence electrons. Phosphorus contributes 1 electron to each chlorine and all the 6 achieve 8 electrons in the outer shell thus creating an ionic bond.</span>

5 0
2 years ago
Read 2 more answers
Used in preparation of fertilizer​
boyakko [2]

Answer:

SO SORRY IF THIS IS WRONG BUT I HOPE THIS HELPS

Explanation:

Primary fertilizers include substances derived from nitrogen, phosphorus, and potassium. Various raw materials are used to produce these compounds. ... The phosphorus component is made using sulfur, coal, and phosphate rock. The potassium source comes from potassium chloride, a primary component of potash.

3 0
3 years ago
Read 2 more answers
What is the volume of kristas rock
Elan Coil [88]

Answer:

for what I can see in the picture the volume is 155

Explanation:

7 0
2 years ago
Read 2 more answers
(6.022*10^23)*2.58=<br> what’s the answer
Sladkaya [172]
The answer would be
1.553676 \times  {10}^{24}
8 0
3 years ago
Read 2 more answers
10. An atom that has 13 protons and 13 electrons is a neutral aluminum (Al) atom. An atom that has 13 protons and 10 electrons i
kotegsom [21]

Answer:

An atom of Al which has 13 protons and 10 electrons is Al cation (Al⁺³)

Explanation:

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other.

For example,

Al atom has 13 protons and 13 electrons. The number of positive and negative charge is equal thus it will be neutral atom.

While the atom of Al which have 13 proton and 10 electron is not neutral. The positive charge is greater than negative by 3. Which means 3 electrons are lose by Al atom and form cation "Al⁺³".

Thus an atom of Al which has 13 protons and 10 electrons is Al cation (Al⁺³)

3 0
3 years ago
Other questions:
  • The Arizona poppy has adapted to living in areas that receive less rain, but there are still periods of time that a drought occu
    14·1 answer
  • HELP PLEASE! <br> I WILL GIVE YOU POINTS
    15·2 answers
  • Which of these is an oxidation half-reaction?
    11·1 answer
  • A sample of nitric acid has a mass of 8.2g. It is dissolved in 1L of water. A 25mL aliquot of this acid is titrated with NaOH. T
    15·1 answer
  • Aluminum:
    10·1 answer
  • Worth 13 points plzzz helpp
    8·2 answers
  • A small file or organization use a payroll program for calculating staff wages each month each employee has a unique payroll num
    11·1 answer
  • Please use a t least 2 of the words please! thank you
    14·2 answers
  • I haven’t shifted before I tried like once a few months ago and I keep wanting to shift and last night I had a dream I did is th
    5·1 answer
  • Using proper units is important when recording data. In this lab, you determined three properties of the objects: mass,
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!