Hello!
We have the following data:
f (radiation frequency) = 
v (speed of light) =
λ (wavelength) = ? (in m)
Let's find the wavelength, let's see:




I Hope this helps, greetings ... DexteR! =)
I think the answer is electrons configuration
The Answer would be e: 3.2 g/L
<span>At STP : p = 1 atm and T = 273.15 K
molar mass Cl2 = 70.906 g/mol
d = molar mass x p/RT = 70.906 x 1 atm / 0.08206 x 273.15=3.16 g/L</span>
I think so, you have to have a heat source to produce water vapor