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nevsk [136]
3 years ago
13

Please HELP, the question is attached.

Chemistry
1 answer:
Nezavi [6.7K]3 years ago
7 0

Try this solution, all the details are described in the attached picture.

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Cesium metal is frequently used in photoelectric cells because the amount of energy necessary to eject electrons from a cesium s
dybincka [34]

Answer:

Wavelength of light in (nm) = 579 nm

Explanation:

At first you find out the amount of energy needed to just eject one electron. This is given by \frac{Energy}{Avogadro's number}

this energy is given in question in kj/mole. This \frac{Energy}{Avogadro's number} is the work function of cesium for each electron is equal to the planc'k  einstein equation.

8 0
3 years ago
What mass of agno3 can be dissolved in 250 g of water at 20 c?
Arisa [49]
More information please
3 0
3 years ago
When the equation Al2(SO4)3 + NaOH + Al(OH)3 + Na2SO4 is correctly balanced, what is the coefficient of Al(OH)3?
nevsk [136]
The balanced chemical formula should be Al2(SO4)3 + 6NaOH = 2Al(OH)3 + 3Na2SO4

Therefore the coefficient of Al(OH)3 is 2!

Hope that helps :)
4 0
3 years ago
Write electron configurations for the following ion: Cd2 Cd2 . Express your answer in order of increasing orbital energy. For ex
Mashutka [201]

Answer:

Cd2+ : 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10 or [Kr] 4d¹⁰

Explanation:

Before proceeding to write out the electron configuration of Cd2+, we have to obtain the electron configuration of Cadmium (Cd),

Cadmium has an atomic number of 48, this means that a neutral cadmium atom will have a total of  48  electrons surrounding its nucleus.

The electronic configuration of Cadmium is;

Cd: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10

The shorthand notation is given as;

Cd: [Kr] 4d¹⁰5s²

Cd2+ means that it has two less electrons, hence it's electron configuration is given as;

Cd2+ : 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10 or [Kr] 4d¹⁰

5 0
3 years ago
Water boils at what degrees Celsius
Archy [21]
100 degrees Celsius. And apparently this answer needs at least 20 characters to explain it well. But yes, the answer is 100 degrees Celsius
4 0
3 years ago
Read 2 more answers
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