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
rodikova [14]
3 years ago
14

HELP PLEEAAASSE ITS NOT AS BAD AS IT LOOKS I PROM ISE ITS PHYSICAL AND CHEMICAL CHANGE

Chemistry
1 answer:
lions [1.4K]3 years ago
8 0
I can’t really understand your question sorry
You might be interested in
Name three instructions that DNA provides to a cell
lesya [120]

Answer:

The instructions in a gene that tell the cell how to make a specific protein. A, C, G, and T are the "letters" of the DNA code; they stand for the chemicals adenine (A), cytosine (C), guanine (G), and thymine (T), respectively, that make up the nucleotide bases of DNA.

hope it helps !

3 0
3 years ago
Read 2 more answers
What is the very small center core of an atom is called?
madam [21]
The small part in the center of the atom is called a nucleus
4 0
3 years ago
Read 2 more answers
Explain how the attractive forces between the particles in a liquid are related to the equilibirum vapour pressure of that liqui
drek231 [11]

Answer:

Attractive forces between particles are inversely proportional to vapour pressure.

Explanation:

Inside a liquid, molecules undergo random motion (thermal motion), but also interact with one another via electromagnetic forces of different kinds, like Van der Waals forces, ion-dipole interactions, hydrogen bonds, etc. These forces keep the liquid together, giving it a definite volume, in distinction to gases, which take the volume of the vessel that contains them.

Now, some molecules in a liquid can attain a high velocity as a random outcome of thermal motion, if this molecule is at the liquid's surface, it might actually escape! actually, many molecules might do that, and form a vapour over the liquid's surface.

Now, we know that liquids exist, therefore this process has to reach an equilibrium, that means, once the vapour becomes <em>dense </em>(or <em>concentrated</em>)<em> </em>enough, it would be as likely for a vapour molecule to re-enter the liquid as it is likely for a liquid molecule to leave the liquid and enter into the vapour.

This is called vapour-liquid equilibrium.  

How can we measure how "concentrated" the vapour is? by measuring the pressure above the liquid. We know by the ideal gas law that the number of molecules in a gas is proportional to pressure at constant volume and temperature.

But how does vapour pressure relate to intermolecular forces?

Simply, the stronger the intermolecular forces, the less likely a molecule at the liquid's boundary will be to shoot of into the vapour phase! and viceversa, if intermolecular forces are very weak, the molecules won't hold together much and many molecules will leave the liquid.

As an extreme case imagine a solid, for which intermolecular forces are the strongest, what's the vapour pressure of a solid? Do solids evaporate into the air?  The answer is no, solids (with few exceptions) don't evaporate, and their vapour pressure is extremely small.

Cheers!

5 0
3 years ago
Which element is a liquid at STP? 1.bromine 2.cesium 3.francium 4.iodine
nexus9112 [7]
Bromine. both Bromine and Mercury are both a liquid at STP. :)
4 0
3 years ago
What is the term for the amount of salts in water? Evaporation
gtnhenbr [62]

Answer:

B.Salinity

I believe

Explanation:

report if wrong

8 0
3 years ago
Read 2 more answers
Other questions:
  • The investigator applies a brief electrical stimulus that causes the potassium channels to open. There are no HCO3- channels, th
    6·1 answer
  • A balanced chemical equation used to prepare ammonium carbonate, (nh4)2co3 , is: 2 n h 3 ( g ) + c o 2 ( g ) + h 2 o ( l ) ⟶ ( n
    9·1 answer
  • If the complete conversion of 1.383g of XI2 results in the formation of 0.564g of XCl2,what is the atomic mass of the element X
    9·1 answer
  • A 0.167-g sample of an unknown compound contains 0.00278 mol of the compound. Elemental analysis of the acid gives the following
    9·1 answer
  • Is sand macromolecule or network solid?<br><br> Thank you
    13·1 answer
  • Describe how light is emitted from an atom. A) As protons absorb energy they travel from the nucleus through the atom emitting l
    6·1 answer
  • Which of the following is a qualitative physical property?
    15·1 answer
  • CAN ANYONE SHARE 10 MEMES AND BAG THE BRAINLISST
    11·2 answers
  • Part A
    13·1 answer
  • water can be synthesized according to the following formula. suppose you have 17 “g” of H2. 2 H2 + O2 -&gt; 2 H2O
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!