Answer:
4.34x10⁻¹⁹ J
Explanation:
The total energy emitted by irradiation is given by
E = hf, where E is the energy, <em>h</em> is the plack constant (6.626x10⁻³⁴ J.s), and <em>f</em> is the frequency. The frequency is also the velocity of the light (c = 2.99x10⁸ m/s) divided by the length of the irradiation (254x10⁻⁹ m). So:
E = (6.626x10⁻³⁴)x(2.99x10⁸)/ (254x10⁻⁹)
E = 7.80x10⁻¹⁹ J
The energy to remove 1 electron is the energy necessary to remove 1 mol divided by the Avogadros number ( 1 mol = 6.02x10²³ electrons):
208400/6.022x10^23 = 3.46x10⁻¹⁹ J
The total energy is the energy necessary to remove one electrons plus the kinectic energy (Ek) of the electrons:
7.80x10⁻¹⁹ = 3.46x10⁻¹⁹ + Ek
Ek = 7.80x10⁻¹⁹ - 3.46x10⁻¹⁹
Ek = 4.34x10⁻¹⁹ J
The correct answer is D.
You can use a pointing word in paragraph two that refers to a word in paragraph one.
It is in connecting paragraph where we can use signal words or time signals to emphasize more on paragraphs. For example, second, meanwhile.
Electrostatics is <span> a branch of physics that deals with the phenomena and properties of stationary or slow-moving electric charges. :) Hope this helps </span>
Answer:
See Explanation
Explanation:
The answer should be 8 mL according to my calculations!
The answer will be A.
Sorry if it was incorrect but that’s the closest answer.
