Question

which region of the electromagnetic radiation has the energy,5 kilocalories per mole?​

Answer 1

Explanation:

Hope answer is helpful.

Answer 2

Explanation:

wavelength

(

λ

)

=

7600

∘

A

=

7600

×

10

−

8

cm

.

Speed of light

(

c

)

=

3

×

10

10

cm s

−

1

Therefore frequency,

v

=

c

λ

=

3

×

10

10

7600

×

10

−

8

=

3.947

×

10

14

s

−

1

Energy of one photon

=

h

v

=

6.62

×

10

−

34

×

3.947

×

10

14

J

=

2.61

×

10

−

19

J

Energy of one mole of photons

=

2.61

×

10

−

19

×

6.023

×

10

23

=

15.72

×

10

4

J

=

157.2

kJ

Energy of one mole of photons in kilocalorie

=

157.2

4.185

=

37.56

kcal per mol

[

∵

1

kcal

=

4.185

kJ

]