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IRISSAK [1]
3 years ago
7

What is diffusion and how does it work

Chemistry
2 answers:
Elina [12.6K]3 years ago
8 0
Diffusion is the intermingling of substances by the natural movement of their particles.
It is when a substance enters and leaves cells. That is how it works.
shepuryov [24]3 years ago
6 0
Diffusion is the net movement of particles from a hight concentration to a low one
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How many molecules of CF₂Cl₂ are in 45.7 grams of CF₂Cl₂? (Show work)
posledela

Answer:

The answer to your question is: 2.20 x 10 ²³ molecules

Explanation:

Data

mass = 45.7 g

molecules of CF₂Cl₂ = ?

Process

1.- Calculate the mass number of CF₂Cl₂

   C = 12    F =2 x 19    Cl = 2 x 35.5

   total = 12 + 38 + 71

   total = 121 g

2.- Use the Avogradro's number to solve the problem

                       121 g -------------------  6.023 x 10²³ molecules of CF₂Cl₂

                        45.7 g ---------------     x

                        x = (45.7 x 6.023 x 10²³) / 121

                        x = 2.75 x 10²⁵ / 121

                        x = 2.20 x 10 ²³ molecules

4 0
3 years ago
Cuando viajo, me gusta comprar recuerdos.
kaheart [24]

Answer:

to buy souvenirs

give me big brain

Explanation:

7 0
2 years ago
Nacl is an ionic solid. the na+ and cl− ions in nacl are bonded through an electrostatic force of attraction commonly known as t
Murrr4er [49]
<span>NaCl is poster-compound for ionic bonding. The bonds in NaCl have about 70% ionic character, making the bond highly polar. its overstatement to state that there is actual ion in NaCl with +1 and -1 charge but actual charge of Na and Cl is +1 and -1 ion, since Nacl exist as a network of highly charged particle and not discrete molecule, NaCl particle does not exhibit intermolecular forces. Water molecule on other hand exhibit London dispersion force, keesom force, and hydrogen bonding. The polar water molecule are attracted to the polarized Na and Cl atoms. This is what allow NaCl(s) to dissolve and ionize in water. Therefore type of attraction in NaCl is ion-dipole attraction.</span>
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3 years ago
Someone plz help xdXD
Licemer1 [7]

Seems to me it's graph A, based on the trends.

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3 years ago
What is the density of helium
Contact [7]
The density of helium is 10 ^-3g.cm^-3
8 0
3 years ago
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