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wel
3 years ago
13

A hydrogen atom in an excited state can be ionized with less energy than when it is in its ground state. What is n for a hydroge

n atom if 0.544 eV of energy can ionize it?
Chemistry
1 answer:
Molodets [167]3 years ago
5 0

Explanation:

It is known that formula for the ionization energy of hydrogen atom is as follows.

               E = \frac{13.6 eV}{n^{2}}

or,          n = \sqrt{\frac{13.6}{E}}

The value of energy is given as 0.544 eV. Therefore, we will calculate the value of n as follows.

                   n = \sqrt{\frac{13.6}{E}}

                      = \sqrt{\frac{13.6}{0.544 eV}}

                      = 5

Thus, we can conclude that n equals to 5 for a hydrogen atom if 0.544 eV of energy can ionize it.

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Mekhanik [1.2K]

Answer:

- Two black balls: they represent a diatomic molecule composed by two atoms of the same element.

- One black ball and two black balls: they represent a compound formed by two different elements.

- One gray ball and two black balls: they represent a compound formed by two different elements.

- Two black-dotted balls: they represent a diatomic molecule composed by two atoms of the same element.

Explanation:

Hey there!

In this case, according to the given information, we can firstly bear to mind the fact that each ball color represents a different element, for that reason we can tell the following:

- Two black balls: they represent a diatomic molecule composed by two atoms of the same element.

- One black ball and two black balls: they represent a compound formed by two different elements.

- One gray ball and two black balls: they represent a compound formed by two different elements.

- Two black-dotted balls: they represent a diatomic molecule composed by two atoms of the same element.

Regards!

8 0
3 years ago
How many hydrogen atoms are in 105 g of water?
mel-nik [20]
Moles of water atoms = mass/molecular weight = 105/18 = 5.83 mol. Number of moles of hydrogen in water = 2 x moles of water = 11.66. Number of H atoms in water = moles of hydrogen x 6.02 x 10^23 = 7.019 x 10^24 ~ 7.02 x 10^24 atoms. Hope this helps.
3 0
3 years ago
A sample of xenon gas occupies a volume of 5.24 L at 411 K. If the pressure remains constant, at what temperature will this
stiks02 [169]

Answer:

161.57 K

Explanation:

V1/T1 = v2/T2

(5.24 L)/(411 K) = (2.06 L)/T2

T2 = 161.57 K

8 0
2 years ago
The frequency of red light is less than that of blue light. Which would contain more energy?
masha68 [24]

Answer:

blue

Explanation:

Red light has a longer wavelength, a smaller frequency, and thus a photon energy which is smaller than blue light

5 0
3 years ago
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The physical properties of matter produce many cause and effect relationships. Which effort is produced by the close packing of
stepan [7]

Answer:

A.

Explanation:

We know quite well that there are three states of matter. Solid,liquid and gaseous states.

While the gaseous states gives the highest freedom of movement, the solid state gives the least freedom of movement. Molecules and atoms of a solid are so tightly packed.

This makes them very dense as they are held together by strong intermolecular forces of attraction. These strong forces prevents the movement of the particles.

As these particles are strongly attracted towards each other, they tend to be incompressible.

4 0
3 years ago
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