Test questions Accidently did this
2 answers:
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You start by diving each quantity given by the atomic wight of each element:
Phosphorus (P)
Hydrogen (H)
Then you divide by the lowest number:
for phosphorus
for hydrogen
So the empirical formula will be:
The frequency : a) 7.5 x 10¹⁴ /s
<h3>Further explanation</h3>Radiation energy is absorbed by photons
The energy in one photon can be formulated as
Where
h = Planck's constant (6,626.10⁻³⁴ Js)
f = Frequency of electromagnetic waves (/s or Hz)
f = c / λ
c = speed of light
= 3.10⁸ m/s
λ = wavelength
The wavelength(λ) of purple light is 400 x 10⁻⁹ m, so the frequency :