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mrs_skeptik [129]

3 years ago

12

If a chlorine atom gains or loses a valence electron, it becomes a charged particle called a/an ___ A. Flourine B. Chloride atom

C. Ion D. Neutron

2 answers:

Triss [41]3 years ago

8 0

option c is the answer

ROCK ON DUDE

Alona [7]3 years ago

3 0

Answer:

c ion

Explanation:

i took the test

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What is the wavenumber of the radiation emitted when a hydrogen

LUCKY_DIMON [66]

Answer: Wavenumber of the radiation emitted is $0.08\times 10^{8}m^{-1}$

Explanation:

The relationship between wavelength and energy of the wave follows the equation:

$E=\frac{hc}{\lambda}$

where,

E = energy of the radiation = $1.634\times 10^{-18}J$

h = Planck's constant = $6.626\times 10^{-34}Js$

c = speed of light = $3\times 10^8m/s$

$\lambda$ = wavelength of radiation = ?

Putting values in above equation, we get:

$1.634\times 10^{-18}J=\frac{(6.626\times 10^{-34}Js)\times (3\times 10^8m/s)}{\lambda}\\\\\lambda=12.16\times 10^{-8}m$

$\bar {\nu}=\frac{1}{\lambda}=\frac{1}{12.16\times 10^{-8}}=0.08\times 10^{8}m^{-1}$

Thus wavenumber of the radiation emitted is $0.08\times 10^{8}m^{-1}$

8 0

4 years ago

What's the name for Pb(NO3)2?

Vlad1618 [11]

Answer:

lead ii nitrate is the answer

5 0

3 years ago

I need help identifying the type of reactions. Can anyone help?

Eddi Din [679]

Answer:

Reaction 5: Decomposition reaction.

Reaction 6: Single replacement reaction

Reaction 7: Combination reaction.

Reaction 8: Combustion reaction.

Explanation:

<u><em>Reaction 5:</em></u> 2KClO₃ → 2KCl + 3O₂.

It is a decomposition reaction.

A decomposition reaction is a type of chemical reaction in which a single compound breaks down into two or more elements or new compounds.

In this reaction: potassium chlorate decomposes into two single components (potassium chloride and oxygen).
So, it is a decomposition reaction.

<u><em>Reaction 6:</em></u> Zn + 2HCl → H₂ + ZnCl₂.

It is a single replacement reaction.

A single-replacement reaction, a single-displacement reaction, is a reaction by which one (or more) element(s) replaces an/other element(s) in a compound.
It is most often occur if element is more reactive than the other, thus giving a more stable product.

In this reaction, zinc metal (more active) displaces the hydrogen to form hydrogen gas and zinc chloride, a salt. Zinc reacts quickly with the acid to form bubbles of hydrogen.

<u><em>Reaction 7:</em></u> N₂O₅ + H₂O → 2HNO₃.

It is a combination "synthesis" reaction.
A synthesis reaction has two or more reactants and only one product.
In this reaction, dinitrogen pentoxide reacts with water to produce nitric acid.
So, it is considered as a synthetic "combination" reaction.

<u><em>Reaction 8:</em></u> 2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O.

It is a combustion reaction.

A combustion reaction is a reaction where hydrocarbon alkane is completely burned in oxygen to produce water and carbon dioxide.

In this reaction 1.0 mole of ethane is burned to give 4.0 moles of carbon dioxide and 6.0 moles of water.

So, it is considered as a combustion reaction.

7 0

3 years ago

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Mantle material rises in convection currents because heated materials becomes more dense

sergey [27]

Heated mater rises and cold mater sinks

3 0

4 years ago

A nitrogen atom in N2 should have a

SIZIF [17.4K]

Answer:

The answer is partial charge 8+.

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3 years ago