The wavelength of visible light varies from 380 nm to 750 nm as the color of the light changes from violet to red. Calculate the energy of a photon whose wavelength is 6.8e-07 m.

energy of photon=1.824ev

Explanation:

given wavelength of ligt=6.8×10⁻⁷m=6800A⁰

energy of photon(E)=hc/λ;

and for simplicity

E=12400/λ

where λ is aken in angstorm

and energy in ev

E=12400/6800ev

E=1.824ev=energy of photon

the answer is a. co2, this would be colder than the : )

explanation:

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"