Compare the wavelengths of infrared waves, ultraviolet light, and visible light.

1 answer:

6 0

Compare the wavelengths of infrared waves, ultraviolet rays, and visible light. ... UV rays have shorterwavelengths and higher frequencies than visible light waves do.

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Water _____.

Sergio039 [100]

Answer: is neither an acid nor a base

Explanation: Water is a universal solvent which means it can dissolve most of the substances in it.

Water has high thermal heat capacity , which means large heat is required to heat the water.

Water is not always pure as it gets contaminated by various pollutants present in the atmosphere such as gases, bacteria and suspended matter.

Water is an amphoteric substance which can act as both acid and base, thus can donate and acept [texH^+[/tex] ions.Thus it is neither an acid nor a base.

$HCl+H_2O\rightarrow H_3O^++Cl^-$

Here water is accepting a proton, thus it acts as base.

$NH_3+H_2O\rightarrow NH_4^++OH^-$

Here water is donating a proton, thus it acts as acid.

4 0

3 years ago

Identify the hybridization of each carbon atom for the molecule above

ipn [44]

Carbons starting from the left end:

sp²
sp²
sp²
sp
sp

Refer to the sketch attached.

<h3>Explanation</h3>

The hybridization of a carbon atom depends on the number of electron domains that it has.

Each chemical bond counts as one single electron domain. This is the case for all chemical bonds: single, double, or triple. Each lone pair also counts as one electron domain. However, lone pairs are seldom seen on carbon atoms.

Each carbon atom has four valence electrons. It can form up to four chemical bonds. As a result, a carbon atom can have up to four electron domains. It has a minimum of two electron domains, with either two double bonds or one single bond and one triple bond.

A carbon atom with four electron domains is sp³ hybridized;
A carbon atom with three electron domains is sp² hybridized;
A carbon atom with two electron domains is sp hybridized.

Starting from the left end (H₂C=CH-) of the molecule:

The first carbon has three electron domains: two C-H single bonds and one C=C double bond; It is sp² hybridized.
The second carbon has three electron domains: one C-H single bond, one C-C single bond, and one C=C double bond; it is sp² hybridized.

The third carbon has three electron domains: two C-C single bonds and one C=O double bond; it is sp² hybridized.
The fourth carbon has two electron domains: one C-C single bond and one C≡C triple bond; it is sp hybridized.
The fifth carbon has two electron domains: one C-H single bond and one C≡C triple bond; it is sp hybridized.