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mars1129 [50]
3 years ago
10

View Lab

Chemistry
2 answers:
Vika [28.1K]3 years ago
7 0

Answer:

c

Explanation:

c

Norma-Jean [14]3 years ago
5 0

Answer:

Hello! I know it's late, but the answer is the first one, A.

Explanation:

Just did it:)

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At what temperature is the average speed of air particles the highest?
Law Incorporation [45]

Answer:

Explanation:

Air is a mixture of roughly 80% nitrogen and 20% oxygen. The diatomic molecules of each type have a Maxwell-Boltzman distribution of velocities.

From the kinetic theory of gases the molecules kinetic energy will depend on the temperature.

Let’s use 300 K as room temperature : The nitrogen molecules have a root mean square velocity ( VRMS ) of 353 m/s. The average for all of the molecules is 347 m/s.

In general in gases of diatomic molecules the speed of sound is 68% of the molecular  VRMS .

8 0
3 years ago
Help!!!!!!!!!!!!!!!!!!
skad [1K]

The density of the sample : 0.827 g/L

<h3>Further explanation</h3>

In general, the gas equation can be written  

\large {\boxed {\bold {PV = nRT}}}

where  

P = pressure, atm , N/m²

V = volume, liter  

n = number of moles  

R = gas constant = 0.082 l.atm / mol K (P= atm, v= liter),or 8,314 J/mol K (P=Pa or N/m2, v= m³)

T = temperature, Kelvin  

n= 1 mol

MW Neon = 20,1797 g/mol

mass of Neon :

\tt mass=mol\times MW\\\\mass=1\times 20,1797 =20.1797~g

The density of the sample :

\tt \rho=\dfrac{m}{V}\\\\\rho=\dfrac{20,1797}{24.4}=0.827~g/L

or We can use the ideal gas formula ta find density :

\tt \rho=\dfrac{P\times MW}{RT}\\\\\rho=\dfrac{1\times 20.1797}{0.082\times 298}\\\\\rho=0.826~g/L

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The water cycle is the movement of water from Earth's surface to the atmosphere and back to Earth's surface. Why do many living
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Many organisms need clean drinking water and we also need moisture in the air for us to stay hydrated
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~Savannah

Jokes from Savannah~

A man goes to the doctor, concerned about his wife’s hearing. The doctor says, “Stand behind her and say something and tell me how close you are when she hears you.”

The man goes home, sees his wife in the kitchen, cutting carrots on the countertop. About 15 feet away he says, “Honey, what’s for dinner?” Nothing. He gets halfway to her and repeats the same question. Nothing. Very concerned, he gets right behind her and asks again “What’s for dinner?”

She turns around and says “For the THIRD time, beef stew!”

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Q: What do you get when you cross a vampire with a snowman?

A: Frostbite!

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