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Nastasia [14]
3 years ago
13

At a certain temperature this reaction follows second-order kinetics with a rate constant of 0.118 M^-1* s^-1:

Chemistry
1 answer:
Anestetic [448]3 years ago
7 0

Answer:

It will take 54 seconds for the concentration of ClCH_2CH_2Cl to decrease to 10.0% of its initial value.

Explanation:

Initial concentration of ClCH_2CH_2Cl = [A_o]=1.41 M

Final concentration of ClCH_2CH_2Cl after t time = [A]=10\%of [A_o]=0.1[A_o]

t = ?

Rate constant of the reaction = k =0.118 M^{-1}s^{-1}

Integrated rate law for second order kinetics is given by:

\frac{1}{[A]}=kt+\frac{1}{[A_o]}

\frac{1}{0.1\times 1.41 M}=0.118 M^{-1}s^{-1}\times t+\frac{1}{1.41 M}

Solving for t :

t = 54 seconds

It will take 54 seconds for the concentration of ClCH_2CH_2Cl to decrease to 10.0% of its initial value.

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Answer:

The solubility of methylacetylene is 0,11 g L⁻¹

Explanation:

Henry's law is a gas law that states that the amount of dissolved gas in a liquid is proportional to its partial pressure above the liquid.

The formula is:

C = kH P

Where C is solubility of the gas (In mol/L)

kH is Henry constant (9,23x10⁻² mol L⁻¹ atm⁻¹)

An P is partial pressure (0,301 atm)

Solving, C = 2,78x10⁻³ mol L⁻¹. In grams per liter:

2,78x10⁻³ mol L⁻¹ₓ \frac{40 g}{mol} = <em>0,11 g L⁻¹</em>

<em></em>

I hope it helps!

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The building block of a nucleic acid, consisting of a five-carbon sugar covalently bonded to a nitrogenous base and a phosphate
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Answer:

Nucleotides

Explanation:

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Nucleotides are building blocks of the nucleic acids. They are the molecules which are composed of three sub units which are:  

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Suppose a solution is described as concentrated. Which of the following statements can be concluded? Select the correct answer b
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Answer:

  • last option: none of<u> the above.</u>

Explanation:

Describing a solution as<em> concentrated</em> tells that the solution has a relative large concentration, but it is a qualitative description, not a quantitative one, so this does not tell really how concentrated the solution is. This is, the term concentrated is a kind of vague; it just lets you know that the solution is not very diluted, but, as said initially, that there is a relative large amount (concentration) of solute.

One conclusion, of course, is that <u>the solute is soluble</u>: else the solution were not concentrated.

On the other hand, the terms saturated and <em>supersaturated</em> to define a solution are specific.

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From above, there is no way that you can conclude whether a solution is supersaturated or not from the statement that a solution is concentrated, so the answer is<u> none of the above</u>.

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