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ser-zykov [4K]
3 years ago
8

Which is a characteristic of aromatic hydrocarbons?

Chemistry
1 answer:
Jlenok [28]3 years ago
7 0

Answer:

A. Alternating single and double bonds

Explanation:

Hydrocarbons i.e. hydrogen and carbon containing compounds, are grouped into two namely: aliphatic and aromatic hydrocarbons. Aliphatic hydrocarbons contains straight or branched chains of carbon and hydrogen atoms in their structure e.g. alkanes, alkenes etc.

On the other hand, aromatic hydrocarbons are cyclic hydrocarbons containing one or more cyclic rings. The benzene ring is the basis of all aromatic hydrocarbons and one characteristics of benzene is that it possesses an alternating single (-) and double bonds (=) in their structure.

Since benzene is a building constituent of aromatic hydrocarbons, an "alternating single and double bond" is a characteristics of aromatic hydrocarbons.

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[Ne] 3s2 3p1  So its A

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You have 26.7 mL of 0.061 mol/L aqueous potassium hydroxide (KOH(aq)) in a conical flask. In a burette
Natasha2012 [34]

Answer:

9.47 mL

Explanation:

The reaction that takes place is:

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First we <u>calculate how many KOH moles reacted</u>, using <em>the given concentration and volume of KOH solution</em>:

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Then we <u>convert KOH moles into H₂SO₄ moles</u>, using the <em>stoichiometric coefficients</em>:

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Finally we <u>calculate the required volume of the H₂SO₄ solution</u>, using<em> the number of moles and given concentration</em>:

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Which two chemical elements make up earths atmosphere
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hope this helps!

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3 years ago
A solution is 0.0433 m lif. what is the molarity of the solution if the density is 1.10 g/ml
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Molarity is the number of moles of solute in one liter of solution whereas molality is the number of moles of solute present in 1 kilo gram of solution.

Molarity is denoted by M and molality denoted by m

m = (n) * (1000 /w_A) = 0.0433 m

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W_A = 1 kg = 1000 g

(W_B /26) * (1000 /1000) = 0.0433

W_B = 1.12 g

Mass of solution

W_B + W_A = 1.12 + 1000 = 1001.12 g

Density of solution  = 1.1 g /mL

d = 1.1 = (W_B + W_A) /V  

1.1 = (1001.12) /V

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molarity of solution is:

M = (n) * (1000 /V)

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Thus, moalrity of solution is 0.0474 M

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