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3 years ago

All of the covalent carbon-carbon bonds in unsaturated hydrocarbons share 2 pairs of electrons.

Chemistry

2 answers:

Evgen [1.6K]3 years ago

5 0

False. carbon-carbon bonds that share 2 pairs of electrons are double bonds. An unsaturated hydrocarbon isnt necessary to only have double bonds. they can also have single bonds or triple bonds.

IgorLugansk [536]3 years ago

5 0

Answer: The given statement is false.

Explanation:

An unsaturated hydrocarbon is a chain of carbon and hydrogen atoms in which adjacent carbon atoms are attached together through double or triple bond.

Since it is known that carbon atom forms covalent compounds so, an unsaturated hydrocarbon not only contains double or triple bonds it also has single bonds in between.

Thus, we can conclude that the statement all of the covalent carbon-carbon bonds in unsaturated hydrocarbons share 2 pairs of electrons, is false.

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Which of the examples below is a chemical agent? Select one:

Sergeu [11.5K]

Chlorine, Anthax is a biological agent, and uranium is a radioactive agent, and dynamite is just a no. Chlorine is a chemical gas.

6 0

3 years ago

Of the options below, which is generally associated with the lowest boiling temperatures when it is the only type of bond presen

Olin [163]

Answer:

Explanation:

Of all the given forces , london dispersion force is the weakest inter-molecular force which is temporary in nature . This force results due to two adjecent atoms or molecules becoming dipoles temporarily. This force exists among the atoms of inert gases.

Atoms having this force have lowest boiling point.

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2 years ago

Determine the molarity of a solution prepared by dissolving 0.198 g of "KHP" (C8H5O4K) in enough water to make 125 mL of solutio

rosijanka [135]

Answer:

0.007756M KHP; 0.0009695 moles NaOH reacts; 0.03488M NaOH.

Explanation:

Potassium hydrogen phthalate, KHP, is a salt used as standard to determine concentration of basic solutions as NaOH solutions.

To find molarity of the KHP solution we need to convert mass of KHP to moles and divide this in 125mL = 0.125L:

Moles KHP -Molar mass: 204.22g/mol-:

0.198g * (1mol / 204.22g) = 0.0009695 moles KHP

Molarity:

0.0009695 moles KHP / 0.125L = 0.007756M KHP

NaOH reacts with KHP as follows:

NaOH + KHP → Na⁺ + KP⁻ + H₂O

That means 1 mole of NaOH reacts per mole of KHP, that means moles of NaOH that reacts are = Moles of KHP added:

0.0009695 moles NaOH reacts

In 27.80mL = 0.02780L the NaOH was contained. Molarity is:

0.0009695 moles NaOH / 0.02780L =

0.03488M NaOH

4 0

2 years ago

In a laboratory experiment, pure lead metal reacted with excess sulfur to produce a lead sulfide compound. The following data wa

Ugo [173]

To get the empirical formula, we need to know the ratio of the moles of both lead and sulfur.

First, lets get the mass of each:
mass of lead = mass of evaporating dish and lead - mass of empty dish
= 26.927 - 25.000 = 1.927 gm of lead (Pb)
mass of sulfur = mass of dish and lead sulfide - mass of dish and lead
= 27.485 - 26.927 = 0.558 gm of sulfur (S)

The next step is to get the number of moles in 1.927 gm of Pb and in 0.558 gm of S:
From the periodic table:
molar mass of lead = 207.2 gm
molar mass of sulfur = 32 gm

number of moles = mass / molar mass
number of moles of Pb = 1.927 / 207.2 = 0.0093 moles
number of moles of S = 0.558 / 32 = 0.0174 moles

The third step is to get the ratio between the moles by dividing the number of moles of each by the smaller of the two:
1 mole of Pb (0.0093 / 0.0093) reacts with 0.0174 / 0.0093 = 1.99 (approximately 2 moles) of sulfur.

Final step is to write the empirical formula based on the ratio:
Lead sulfide compound is written as : PbS2

6 0

3 years ago

(01.01 LC)

Elan Coil [88]

False is the correct answer.

4 0

2 years ago

Read 2 more answers