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AlladinOne [14]
2 years ago
12

Which of the following statements about semi-empirical methods are true?

Chemistry
1 answer:
juin [17]2 years ago
5 0

Answer:

a

Explanation:

The correct statement about semi-empirical methods is

It combines a theoretically sound model of bonding with some experimentally determined parameters.

These methods are typically referred to by acronyms which encode some of the underlying theoretical assumptions.

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The first excited state of Ca is reached by absorption of 422.7 nm light. Find the energy difference (kJ/mole) between the groun
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For the excited state of Ca at the absorption of 422.7 nm light,the energy difference  is mathematically given as

E= 4.70x10-22 kJ/mol

<h3>What is the energy difference (kJ/mole) between the ground and the first excited state?</h3>

Generally, the equation for the Energy  is mathematically given as

E = nhc / λ

Where

h= plank's constant

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c = speed of light

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Therefore

E = 1*(6.625x 10-34 Js)( 3x 10^8 m/s) / ( 422.7x10^-9)

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E= 4.70x10-22 kJ/mol

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Which of these equations best summarizes photosynthesis?
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                                              Sunlight

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Explanation:

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