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natulia [17]
4 years ago
7

Is mass conserved when you burn wood?

Chemistry
1 answer:
Alex_Xolod [135]4 years ago
7 0
No it is not conserved


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The ionization energy of silver is 731 kJ/mol. Is light with a wavelength of 415 nm sufficient to remove an electron from a silv
sineoko [7]

The energy of the light with a wavelength of 415 nm is not sufficient to remove an electron from a silver atom in the gaseous phase.

<h3>Energy and wavelength of light</h3>

The energy and wavelength of light are related by the formula given below:

  • Energy = hc/λ
  • where, E = energy
  • h = Planck's constant
  • c = velocity of light
  • λ = wavelength of light

<h3>Calculating the energy of the light</h3>

From the data provided:

  • h = 6.63 × 10^-34 Js
  • c = 3.0 × 10^8 m/s
  • λ = 415 nm = 4.15 × 10^-7 m

E = (6.63 × 10^-34 × 3.0 × 10^8 m/s)/4.15 × 10^-7 m

E = 4.79 × 10^-19 J

Energy of light is 4.79 × 10^-19 J

Compared with the ionization energy of silver, the energy of the light is far less.

Therefore, the energy of the light with a wavelength of 415 nm is not sufficient to remove an electron from a silver atom in the gaseous phase.

Learn more about about ionization energy and energy of light at: brainly.com/question/14596067

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3 years ago
Which statement best describes the properties of covalent compounds?
AnnyKZ [126]
Covalent network. <span>A solid that is extremely hard, that has a very high melting point, and that will not conduct electricity either as a solid or when molten is held together by a continuous three-dimensional network of covalent bonds. Examples include diamond, quartz (SiO </span><span>2 </span>), and silicon carbide (SiC). The electrons are constrained in pairs to a region on a line between the centers of pairs of atoms.<span>


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Light travels three-fourths as fast through water as it does through a vacuum.
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1.33 is the answer thank me later
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4 years ago
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I NEED HELP PLEASE!!! I WILL RATE BRAINLIEST!!!
lidiya [134]

Answer:

The answer to your question is:  [H+]  = 0.0016

Explanation:

Data

pH = 2.8

[H+] of the solution = ?

Formula

pH = -log [H+]

process

                2.8 =  -log [H+]           then we get antilog

      antilog (-2.8 ) = [H+]    

      [H+]  = 0.0016

6 0
4 years ago
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