Answer:
#_photons = 30 photons / s
Explanation:
Let's start by finding the energy of a photon of light, let's use the Planck relation
E = h f
the speed of light is related to wavelength and frequency
c = λ f
we substitute
E = h c /λ
E₀ = 6.63 10⁻³⁴ 3 10⁸/500 10⁻⁹
E₀ = 3.978 10⁻¹⁹ J
now let's use a direct proportion rule. If the energy of a photon is Eo, how many fornes has an energy E = 1.2 10⁻¹⁷ J in a second
#_photons = 1 photon (E / Eo)
#_photons = 1 1.2 10⁻¹⁷ /3.978 10⁻¹⁹
#_photons = 3.0 10¹
#_photons = 30 photons / s
Electrospray ionization mass spectroscopy often results in analyte molecules fragmenting
FALSE
<u>Electrospray ionization mass spectroscopy</u>
It is a technique using electrospray to generate ions for mass spectrometry by applying high voltage to the liquid.
Electrospray ionization is a soft ionization technique.
It is used for production of gas phase ions.
The process of Electrospray ionization mass spectroscopy
1. dispersal of a fine spray charge droplets
2. solvent evaporation
3. ion ejection from highly charged droplets
To know more about Electrospray ionization mass spectroscopy
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Answer:
960 m
Explanation:
Given that,
- Speed = 120 m/s
- Time taken = 4 minutes
We have to find the distance covered.
Firstly, let's convert time in seconds.
→ 1 minute = 60 seconds
→ 4 minutes = (4 × 60) seconds
→ 4 minutes = 240 seconds
Now, we know that,
→ Distance = Speed × Time
→ Distance = (4 × 240) m
→ Distance = 960 m
Therefore, distance covered is 960 m.