Your answers are correct. I love the Universal formula.
Non metals and metollids in periodic tables are the same how this helps ;)
The wavelength of the radiation is 4.7 x 10⁻⁹ m
What is the Einstein's Formula for Energy?
The energy
E is given, from Einstein's formula, as:
E=h⋅ν
Where:
h=6.63×10⁻³⁴Js is Planck's constant;
ν is the frequency.
You can relate frequency and wavelength
λ through the speed of light c as:
c=λ⋅ν
So finally you get:
E=hc/λ
It is given in the question
The energy of a photon is 4.23 x 10⁻¹⁷ J.
Wavelength = ?
λ = hc/E
λ = 6.63×10⁻³⁴x 3 x 10⁸ / 4.23 x 10⁻¹⁷
λ = 4.7 x 10⁻⁹ m
Therefore the wavelength of the radiation is 4.7 x 10⁻⁹ m .
To know more about Einstein's Equation for Energy
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The number 250 mg tablets of Metronidazole that are needed to make 150 ml of suspension containing 100 mg/ml
250mg= 150 ml
what about 100 ml = ? Mg
by cross multiplication
150 ml x 250 mg/100 ml = 60 Mg of 250 mg is needed
Answer:
One
Explanation:
In H2O, there's 2 hydrogen atoms and 1 oxygen atom
