The energy of the photon with the wavelength of 584 nm is 3.4×10¯¹⁹ J
<h3>How to determine the frequency of the photon</h3>
- Wavelength (λ) = 584 nm = 584×10⁻⁹ m
- Speed of light (v) = 3×10⁸ m/s
- Frequency (f) = ?
f = v / λ
f = 3×10⁸ / 584×10⁻⁹
f = 5.14×10¹⁴ Hz
<h3>How to determine the energy</h3>
- Planck's constant (h) = 6.626×10¯³⁴ Js
- Frequency (f) = 5.14×10¹⁴ Hz
- Energy (E) =?
E = hf
E = 6.626×10¯³⁴ × 5.14×10¹⁴ Hz
E = 3.4×10¯¹⁹ J
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Conducter is a great material to transfer heat
Millimeters are an SI unit of length that =0.0001 m
4.79 x 10⁻⁷moldm⁻³
Explanation:
Given parameters:
pOH of RbOH = 6.32
Unknown:
Molarity of the base = ?
Solution:
The pH or pOH scale is used for expressing the level of acidity alkalinity of aqueous solutions.
pOH = -log[OH⁻]
we know the pOH to be 6.32
6.32 = -log[OH⁻]
[OH⁻] = inverse log₁₀(6.32)
[OH⁻] = 4.79 x 10⁻⁷moldm⁻³
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