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3 years ago

QUICK (lots of points) How many lone pairs are present in Xylene?!

Chemistry

2 answers:

Snezhnost [94]3 years ago

7 0

i dont think their are a exact number

Goryan [66]3 years ago

5 0

Oxygen typically has 4 non-bonding electrons (or 2 lone pairs). The full valence shell for oxygen is 8 and the number of electrons in bonds is 4. Therefore, the difference is 4. Table of the typical numbers of bonds and non-bonding electrons.

.....Is this the answer your looking for? kinda confused....If not please delete my answer so somebody can give you what you want! :)

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Given the equation representing a system at equilibrium:Which statement describes the concentration of the two gases in this sys

WARRIOR [948]

Answer:

.The concentration of N2O4(g) and the concentration of NO2(g) must be constant.

Explanation:

N2O4(g)<--------> 2NO2(g)

At equilibrium, all the concentrations of species involved in the equilibrium expression remain constant. This is because, at equilibrium, the rate of forward reaction equals the rate of reverse reaction. The concentration of the system does not change with time. The relative concentration of each specie, remain steady at equilibrium.

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3 years ago

Jimmy developed a model to show the difference between pure substances and mixtures

IrinaK [193]

Pure substances cannot be separated into any other kinds of matter, while a mixture is a combination of two or more pure substances.
A pure substance has constant physical and chemical properties, while mixtures have varying physical and chemical properties.

<u>Explanation:</u>

A matter which cannot be separated into any other kind of matter using the chemical or physical process is called pure substances. A pure substance has the same color, composition, and texture.
An element consisting of a single compound with a definite composition, physical and chemical properties are called pure substances.
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3 years ago

What are the observed effects of sleep deprivation on leptin and ghrelin?

Afina-wow [57]

Answer:

Lack of sleep increases hunger hormone ghrelin and decreases the satiety hormone leptin which may help explain the association between inadequate sleep and overweight.

Explanation:

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4 years ago

The heat of fusion for water is the amount of energy needed for water to?

Aleonysh [2.5K]

Answer : (C) The heat of fusion for water is the amount of energy needed for water to melt.

Explanation :

Heat of fusion : It is calculate the amount of energy required for melting of a substance to change its states from solid to liquid at constant pressure.

Fusion is a process in which phase changes from solid to liquid.

In case of water, the solid ice converted into liquid water by the process of melting.

The reaction of phase changes in water is,

$Ice(s)\overset{Fusion}{\rightarrow} Water(l)$

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4 years ago

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VashaNatasha [74]

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3 years ago