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3 years ago

Which atmospheric layer is represented by F? What are its characteristics?

Chemistry

1 answer:

Virty [35]3 years ago

4 0

Answer:

Ionosphere.

Explanation:

The atmospheric layer that is represented by F is known as IONOSPHERE.

The characteristics of Ionosphere

1. It is considered to be located in the upper layer of the earth's atmosphere due to the location of region F.

2. It is ionized by solar radiation that contains an electrical charge.

3. It functions as a reflector. This can be observed in radio waves broadcasting.

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A reaction was run with an initial concentration of 0.15 m. the half-life at 800 k was determined to be 1.751×10-4 s. the value

Juli2301 [7.4K]

Answer:

3.95 x 10³ s⁻¹.

Explanation:

∵ The value of the half-life is independent of the initial concentration of the reactant present.

∴ The reaction is a first order reaction.

<em>The relation between half-life (t1/2) and rate constant for the first order reaction is: (t1/2) = ln2/k = 0.693/k.</em>

∴ k = ln2 / (t1/2) = 0.693 / (1.751 x 10⁻⁴ s) = 3.95 x 10³ s⁻¹.

4 0

3 years ago

How the surface of the early Earth and its atmosphere have changed to

natima [27]

Answer:

As Earth cooled, an atmosphere formed mainly from gases spewed from volcanoes.

Explanation:

8 0

2 years ago

How many grams od Mg(OH)2 will be needed to neutralize 25 mlod

irina [24]

Answer:

0.0073 g

Explanation:

Considering:

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

Or,

$Moles =Molarity \times {Volume\ of\ the\ solution}$

Given :

For HCl :

Molarity = 0.010 M

Volume = 25 mL

The conversion of mL to L is shown below:

1 mL = 10⁻³ L

Thus, volume = 25×10⁻³ L

Thus, moles of HCl :

$Moles=0.010 \times {25\times 10^{-3}}\ moles$

Moles of HCl = 0.00025 moles

Considering the reaction shown below as:-

$2HCl+Mg(OH)_2\rightarrow MgCl_2+2H_2O$

2 moles of HCl reacts with 1 mole of $Mg(OH)_2$

So,

1 moles of HCl reacts with 1/2 mole of $Mg(OH)_2$

Also,

0.00025 moles of HCl reacts with $\frac{1}{2}\times 0.00025$ mole of $Mg(OH)_2$

Mole of $Mg(OH)_2$ = 0.000125 moles

Molar mass of $Mg(OH)_2$ = 58.3197 g/mol

Mass = Moles*Molar mass = $0.000125\times 58.3197\ g$ = 0.0073 g

5 0

3 years ago

Read 2 more answers

15. Triglycerides, waxes, and steroids are all ___ lipids because they contain only carbon, hydrogen, and oxygen

Jlenok [28]

The answer to this question is C

3 0

3 years ago

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what temperature does water freeze using degrees Celsius and what is the basic unit for measuring mass

Olin [163]

Freezing point is the temperature at which a substance undergoes a phase transition from liquid to solid state. Water converts from liquid state to solid ice at a temperature of $0^{0}C$ .

Mass is the amount of matter contained in a substance. The SI unit of mass is kilogram. 1 kilogram is equal to 1000 g. One kilogram is defined as the mass of one cubic decimeter of water at the freezing point of water.

5 0

4 years ago