How many violet photons 7.5 X 10^14 Hz would are necessary to provide the energy of a single AA battery that contains 1300 J? answer numerically using scientific notation with e and significant figures.

2.6 * 10^21 photons

Explanation:

First we obtain the energy of one photon.

The energy of one photon = hf

h= Planks constant = 6.6 * 10^-34 Js

f = frequency of the radiation =  7.5 X 10^14 Hz

E = 6.6 * 10^-34 *  7.5 X 10^14

E= 49.5 * 10^-20 J

Number of photons = Total energy/ energy of one photon

Total energy = 1300 J

Number of photons = 1300/49.5 * 10^-20

Number of photons = 2.6 * 10^21 photons

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.