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2 years ago

What are dispersion forces

Chemistry

2 answers:

Neko [114]2 years ago

7 0

First of all, disperse means to break away.

So dispersion forces are forces that cause molecules to break away from each other. Dispersion forces are a very very weak force because the molecules are not attracted to each other because they disperse or move away.

pychu [463]2 years ago

5 0

are a type of force acting between atoms and molecules.[1] They are part of the van der Waals forces. The LDF is named after the German-American physicist Fritz London.

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A gas occupies 2.50 L at 1.5 atm. What will be the volume of this gas if the

sashaice [31]

Answer:

2.08 L

Explanation:

$V_{2} = V_{1}$ $(\frac{P_{2} }{P_{1} })$

= 2.50L × $(\frac{1.25 atm}{1.5 atm} )$

=2.08L

8 0

2 years ago

How many moles of hcl are required to make 500 ml of a 3.0 mol/l solution of hcl?

LiRa [457]

Answer:

1.5 moles

Explanation:

To find the number of moles of HCl in 500 mL of a 3 M solution of HCl, we consider moles in 1 liter/ 1000 mL.

3 moles HCl is contained in 1000 mL

x moles is HCl is contained in 500 mL

$= \frac{3 \: \times \: 500}{1000} \: moles \\ = 1.5 \: moles$

Hence the number of moles of HCl in 500 mL is 1.5 moles.

8 0

1 year ago

Name a complex salt used in silver-playing.

kupik [55]

Answer :

Sodium Argentocyanide.

4 0

2 years ago

Read 2 more answers

Many laboratory gases are sold in steel cylinders with a volume of 43.8 L. What mass (in grams) of argon is inside a cylinder wh

MrRa [10]

It's very simple... if we remember value of Universal Gas Constant R and Ideal Gas Law, so...

Ideal Gas Law
pV = nRT, where:
p - pressure (in kPa),
V - volume (in L),
n - number of moles (in mol),
R - universal cas constant (in kPa * L / mo l* K),
T - temperature (in K)

n = m/M, where:
n - number of moles,
m - mass (in grams),
M - molar mass of ingredient (in g/mol) - you find this at Periodic Table.

pV = nRT ---> pV = mRT/M ---> pVM = mRT ---> pVM/RT = m

p = 17615 kPa
T = 273.15 + 23 = 296.15 K
V = 43.8 L
R = 8.314 kPa * L / mol * K
M (for argon) = 39.948 g/mol

and

m = (17615 kPa * 48.3 L * 39.948 g/mol) / (296.15 K * 8.314 kPa * L / mol * K)
m = 13803.93 grams of Argon

5 0

3 years ago

How long does it take for the moon to complete one full revolution around the Earth?

Arada [10]

It takes about a month for the Moon to complete one revolution around the earth. It is much longer than 60 hours and much shorter than 365 days. So the correct answer is C. 29.5 days. I think you made a typo, because the correct answer is 29.5 days not years.

6 0

3 years ago

Read 2 more answers