Answer:
The number of molecules in CH4, also known as methane, is merely 0.85 * 6.02210 * 10 ^ 23 (Avogadro's Number). This amounts to <em><u>approximately 5.1 * 10 ^ 23 molecules</u></em><u> with the correct number of significant figures</u>.
B: Painting over a metal surface in order to prevent rust is known as
rust proofing and it works by preventing oxygen and water from reaching
the metal surface thus preventing a redox reaction which would result in
rusting.
The kinetic energy that the liberated electron has in eV based on the given values is :
10.28 eV.
<h3>Explanation:</h3>
- 1 eV is the kinetic energy gained by an electron or proton when acted upon by a 1 volt potential difference. E = QV is the formula for energy in terms of charge and potential difference.
A photoelectron's maximum kinetic energy is given by
Emax = hf - W
- where h is Plank's constant,
- f is the incident photon's frequency, and
- W denotes the metal surface's work function.
here given,
f = 3.62 x 10¹⁵ Hz
W = 4.70 eV
by recalling the equation for a photoelectron's maximum kinetic energy with given values,
Emax = hf - W
= ((4.14 × 10⁻¹⁵eV.s)(3.62 x 10¹⁵ Hz)) - (4.70 eV)
= 10.28 eV
As a result, we discovered that the maximum kinetic energy of electrons is 10.28eV.
To learn more about kinetic energy of electrons refer to :
brainly.com/question/21208918
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C) landslides.
Explanation:
Landslides is not a way in which mountains are built on earth. It is a destructive process in nature that causes the slumping and wasting of land masses.
Landslide is a form of mass wasting and does no build masses.
Volcanoes helps to build mountains on the crust and this way, igneous rocks are formed.
Deposition process upbuilds to form sedimentary rocks.
Faulting is a can also be a constructive process that builds a mountain in the case of horsts and graben
learn more:
Sedimentary rocks brainly.com/question/9131992
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Answer:
≈ 0.6579 atm
Explanation:
The pressure in atmospheres is the ratio of the pressure on the mountain to one atmosphere, in corresponding units.
The pressure is ...
500 /760 atm = 25/38 atm ≈ 0.6579 atm
