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
german
3 years ago
5

5 of 7 What percentage of a material will persist after 80 minutes if it's half life is 20 minutes?​

Chemistry
1 answer:
malfutka [58]3 years ago
6 0

Answer:

50

Explanation:

You might be interested in
Hydrogen bonds are in the family of Van der Waals forces. They are weaker than ionic and covalent bonds but they cause interesti
-Dominant- [34]

Answer:

The answer is B. Van der Waals forces are weaker than ionic and covalent bonds.

Explanation:

In general, if we arrange these molecular forces from the strongest to weakest, it would be like this:

Covalent bonds > Ionic bonds > Hydrogen bonds > Dipole-Dipole Interactions > Van der Waals forces

Covalent bonds are known to have the strongest and most stable bonds since they go deep and into the inter-molecular state. A diamond is an example of a compound with this characteristic bond.

Ionic bonds are the next strongest molecular bond following covalent bonds. This is due to the protons and electrons causing an electro-static force which results to the strong bonds. An example would be Sodium Chloride (NaCl), which when separated is Na⁺ and Cl⁻.

Van der Waals forces, also known as Dispersion forces, are the weakest type of molecular bonds. They are only formed through residual molecular attractions when molecules pass by each other. It doesn't even last long due to the uneven electron dispersion. It can be made stronger by adding more electrons in the molecule. This kind of molecular bonds appear in non-polar molecules such as carbon dioxide.

HOPE THIS HELPS!!!!!!!!!!!!!!

///////////////////////////////////////////////////////////////////////////////////////////

7 0
3 years ago
They all have the same choices but one of them its not gonna be used.​
Dima020 [189]

Answer:

limiting reactant

Explanation:

it is consumed totally

3 0
3 years ago
What might go wrong while heating a substance<br> with a candle?
GaryK [48]

Answer:

the wax melts

Explanation:

because i don't know

7 0
2 years ago
Read 2 more answers
How many atoms of each element are in one molecule of 2-heptanone?​
Alex17521 [72]
A chemical structure of a molecule includes the arrangement of atoms and the chemical bonds that hold the atoms together. The 2-HEPTANONE molecule contains a total of 21 bond(s) There are 7 non-H bond(s), 1 multiple bond(s), 4 rotatable bond(s), 1 double bond(s) and 1 ketone(s) (aliphatic).
6 0
3 years ago
A sample of argon gas collected at a pressure of 0.918 atm and a temperature of 279 K is found to occupy a volume of 719 millili
babymother [125]
Yeah i have 0 idea i’m sorry.
3 0
3 years ago
Other questions:
  • Mixtures two or more substances that are mixed together but are not chemically combined the substance in a mixture each keep the
    15·2 answers
  • Type the correct answer in the box. Express your answer to three significant figures.
    13·1 answer
  • How do S and P waves move through a solid material?
    14·1 answer
  • Select the correct answer.
    10·1 answer
  • What is the state of oxygen at -200 degrees celsius
    6·1 answer
  • Is na2o a element or compound
    15·2 answers
  • Express in scientific notation. Choose the answer with the proper number of significant figures.
    5·1 answer
  • The knowledge produced by science builds on old ideas and is constantly changing.
    15·1 answer
  • Compare the properties of 1.0 M aqueous sugar solution to a 0.5 M aqueous solution of NaCl.​
    6·1 answer
  • Substances that dissolve in water nd give up OH-ions are considered what
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!