Answer:
2 eV
Explanation:
The energy of a photon of light is given by the formula

where
h is the Planck constant
c is the speed of light
is the wavelength of the photon
In this problem we have:


is the wavelength of the photon
Therefore, the energy in Joules is

We want to convert this energy into electronvolts: we know that the conversion factor is

Therefore,

Explanation:
ok that is ans k............
<span>100 g of KClO3 @ 122.55 g/mol = 0.816 moles of KClO3
by the reaction
2 KClO3 --> 2 KCl & 3 O2
0.816 moles of KClO3 @ 3 moles O2 / 2 moles KClO3 = 1.224 moles of O2 can be made
using molar mass
1.224 moles of O2 @ 32.0 g/mol =
39.2 grams of O2 can be made</span>
<em>The Octet Rule requires all atoms in a molecule to have 8 valence electrons--either by sharing, losing or gaining electrons--to become stable. For Covalent bonds, atoms tend to share their electrons with each other to satisfy the Octet Rule.</em>