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
What are some of the different substances that make up a pizza?
Nadya [2.5K]
Pizza dough cheese tomato paste this is your typical cheese pizza
5 0
3 years ago
Which process is characterized by the movement of particles?.
Serjik [45]

Answer: Diffusion is the movement of particles from a high to low particle concentration, while osmosis is the movement of water from a high to a low water concentration.

Explanation:

6 0
3 years ago
Read 2 more answers
Which of these is NOT true about electromagnets?
Alex17521 [72]

Answer:

Permanent = false

Explanation:

All of the other choices are true

4 0
1 year ago
Methylene chloride (CH2Cl2) has fewer chlorine atoms than chloroform (CHCl3). Nevertheless, methylene chloride has a larger mole
Talja [164]

Answer:

Explanation has been given below.

Explanation:

  • Chloroform has three polar C-Cl bonds. Methylene chloride has two polar C-Cl bonds. So it is expected that chloroform should be more polar and posses higher dipole moment than methylene chloride.
  • Two factors are liable for the opposite trend observed in dipole moments of methylene chloride and chloroform.
  • First one is the number of hyperconjugative hydrogen atoms present in a molecule. Hyperconjugation occurs with vacant d-orbital of Cl atom. Hyperconjugation amplifies charge separation in a molecule resulting higher dipole moment.
  • Methylene chloride has two hyperconjugative hydrogen atoms and chloroform has one hyperconjugative hydrogen atom.Therefore methylene chloride should have higher charge separation as compared to chloroform.
  • Second one is induction of opposite polarity in a C-Cl bond by another C-Cl bond in a molecule. Higher the opposite induction of polarity, lower the charge separation in a molecule and hence lower the dipole moment of a molecule.
  • Chloroform has three C-Cl bonds and methylene chloride has two C-Cl bonds. Therefore opposite induction is higher for chloroform resulting it's lower dipole moment.
6 0
3 years ago
Please help fast. I will give brainliest.
Sonbull [250]

Answer:39 min

Explanation:

5 0
2 years ago
Other questions:
  • What is the volume occupied by 2.00 moles of Ar(g) at STP? Another one I am stuck on...please help!
    14·1 answer
  • Write a complete reaction of succinic acid and acetic anhydride
    10·1 answer
  • Which descriptions apply to eukaryotic cells? Check all that apply.
    7·1 answer
  • Write the correct term: In gaseous substances, the individual molecules are relatively (close/far apart) and are moving freely,
    6·1 answer
  • Think about what you have learned about electrons, energy levels, and electron configurations. In 2 or 3 sentences, explain why
    9·1 answer
  • 1. The
    8·1 answer
  • Earth carrying capacity is determined by our ?
    13·2 answers
  • Prepare a dialogue between two friends about development of society .​
    15·1 answer
  • Why are sound waves considered a type of mechanical energy?
    8·2 answers
  • Based on their composition and structure list, CH2Cl2, CH3CH2CH3, and CH3CH2OH in order of: a. Increasing intermolecular forces
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!