Hospital X-ray generators emit X-rays with wavelength of about 15.0 nanometers (nmnm), where 1nm=10−9m1nm=10−9m. What is the energy of a photon of the X-rays

Answer :  The energy of a photon of X-rays is

Explanation : Given,

Wavelength of photon =

conversion used :

Formula used :

As,

So,

where,

= frequency of photon

h = Planck's constant =

= wavelength of photon  =

c = speed of light =

Now put all the given values in the above formula, we get:

Therefore, the energy of a photon of X-rays is

- lead + phosphoric acid = hydrogen + lead(ii) phosphate

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).