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siniylev [52]
3 years ago
14

what is a wavelength of radio wave that travels at the speed of light 3.0 x 10^8 m/s and has frequency of 200 megahertz (200 mil

lion hz)

Chemistry
1 answer:
Dimas [21]3 years ago
5 0

The answer is 0.15 m

Hope you can see the answer clearly...

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Dafna11 [192]

Answer:

Boron

Explanation:

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.

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In given atomic model we can see that there are five electrons out side the nucleus it means this atomic model is of that element which have atomic number 5 and it is boron.

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It means its atomic number is five and mass number is 5+6 = 11

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How much energy is required to evaporate grams of water?.
gregori [183]

Answer:

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Explanation:energy known as the latent heat of vaporization is required to break the hydrogen bonds. At 100 °C, 540 calories per gram of water are needed to convert one gram of liquid water to one gram of water vapour under normal pressure.

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Answer:

NaF + HCl --> NaCl + HF

Explanation:

hope it helps you

4 0
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The protection of animals, plants, and natural resources
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The protection of animals, plants, and natural resources

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