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2 years ago

Do the number of moles of a gas impact the pressure of a gas?

1 answer:

6 0

Yes. Avogadro Law gives the relationship between volume and amount when pressure and temperature are held constant. Remember amount is measured in moles. This means the gas pressure inside the container will increase (for an instant), becoming greater than the pressure on the outside of the walls.

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Rainwater can have a ph as low as 3,meaning that it is very

GREYUIT [131]

Rainwater can have a ph as low as 3, meaning that it is very C. Acidic

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3 years ago

Given the wavelength of the corresponding emission line, calculate the equivalent radiated energy from n = 4 to n = 2 in both jo

lions [1.4K]

Explanation:

It is given that,

Initial orbit of electrons, $n_i=4$

Final orbit of electrons, $n_f=2$

We need to find energy, wavelength and frequency of the wave.

When atom make transition from one orbit to another, the energy of wave is given by :

$E=-13.6(\dfrac{1}{n_f^2}-\dfrac{1}{n_i^2})$

Putting all the values we get :

$E=-13.6(\dfrac{1}{(4)^2}-\dfrac{1}{(2)^2})\\\\E=2.55\ eV$

We know that : $1\ eV=1.6\times 10^{-19}\ J$

So,

$E=2.55\times 1.6\times 10^{-19}\\\\E=4.08\times 10^{-19}\ J$

Energy of wave in terms of frequency is given by :

$E=hf$

$f=\dfrac{E}{h}\\\\f=\dfrac{4.08\times 10^{-19}}{6.63\times 10^{-34}}\\\\f=6.14\times 10^{14}\ Hz$

Also, $c=f\lambda$

$\lambda$ is wavelength

So,

$\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8}{6.14\times 10^{14}}\\\\\lambda=4.88\times 10^{-7}\ m\\\\\lambda=488\ nm$

Hence, this is the required solution.

4 0

3 years ago

After studying weather, Beto bought a simple weather station and put it up in his yard. He was especially interested in wind and

Alex73 [517]

Incomplete question. The remaining part reads;

Choose the correct words or phrases to complete the sentences.

Global winds occur due to

1. Choose...

a. solar currents

b. convection currents

c. sea breezes

d. uneven heating

over a large area and this forms

2. Choose...

a. solar currents

b. convection currents

c. sea breezes

d. uneven heating

caused by cool and warm air.

Answer:

1. d. uneven heating

2. b. convection currents

Explanation:

1. What Beto should know is that as the earth moves and rotates around the sun, some parts of the Earth receive more sunlight and others less, which then leads to uneven heating over a large area of the earth.

2. This uneven heat then forms a convection current containing varying patterns of air spreading to various parts of the globe.

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3 years ago

Who is the density of on object with o moss of t20g on a volume of 7mL?

Musya8 [376]

Answer:

2.857 g/mL

Explanation:

as we know density = mass/volume

8 0

3 years ago

Read 2 more answers

Which law relates temperature, pressure, volume, and the number of moles of a gas under perfect conditions?

Elanso [62]

Ideal gas law

Explanation:

The ideal gas law relates the temperature, pressure, volume and the number of moles of a gas under perfect conditions.

The ideal gas law is a combination of:

Boyle's law- "the volume of a fixed mass of gas varies inversely as the pressure changes if the temperature is constant"

Charles's law - "the volume of a fixed mass of a gas varies directly as its absolute temperature if the pressure is constant"

Avogadro's law - "equal volumes of all gases at the same temperature and pressure contains equal number of molecules".

The law gives:

PV = nRT

where:

P is the pressure of the gas

V is the volume of gas

n is the number of moles

T is the temperature

R is the gas constant

Learn more:

Ideal gas law problems brainly.com/question/13064292

#learnwithBrainly

7 0

3 years ago