Can somebody answer these 5 questions for me! you : )

in the following problems, practice calculations involving energy, wavelength and frequency:
1) what is the frequency of green light that has a wavelength of 5.14 x 10^-7m?
2) what is the wavelength of infrared radiation with a frequency of 3.85 x 10^12 hz?
3) what is the energy of a photon with a frequency of 7.85 x 10^14 hz?
4) what is the energy of a photon having a wavelength of 6.08 x 10^-7 m?
5) what is the wavelength of ultraviolet radian having 2.94 x 10^-8 j of energy?

1. The frequency of green light that has a wavelength of the

2. Wavelength of infrared radiation with frequency

3. Energy of a photon with frequency

4. The energy of a photon having a wavelength of

5. Wavelength of ultraviolet radiation having

Explanation:

The equation connecting wavelength, frequency and speed of electromagnetic radiation is

c=ϑλ

1. λ =

ϑ = c/λ =

2. ϑ =

λ= c/ϑ

3. E = h ϑ

4. E= hc/λ

5. E=

λ= hc/E

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.