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3 years ago

The way in which light moves through objects is related to the type of material from which the object is made

Chemistry

1 answer:

adelina 88 [10]3 years ago

6 0

Answer: True

Explanation:

The speed of light in a material medium depends on its molecular structure, in particular its electromagnetic properties, electrical and magnetic permeability. These properties may have different values for different wavelengths or frequencies of the incident light.

In this way, the speed of light depends on the medium and reaches its maximum value in a vacuum, so that, it will be lower in a material medium . In the vacuum (or in the air) the speed of light is 3 x 10⁸ m / s and in any other medium its value is lower.

To characterize the particularities of the propagation of light in the media, the refractive index is introduced ,

n = c / v

where c is speed of light in a vacuum and v is the speed of light in the medium considered . So the speed of light in a medium is given by the refractive index whose value is always greater than 1.

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Draw the major organic substitution product(s) for (2R,3S)-2-bromo-3-methylpentane reacting with the given nucleophile. Indicate

Andrew [12]

Answer:

(2R,3S)-2-ethoxy-3-methylpentane

and

(2S,3S)-2-ethoxy-3-methylpentane

Explanation:

For this case, we will have $CH_3CH_2O^-$ as nucleophile. Also, this compound is also in excess. So, we will have as solvent $CH_3CH_2OH$ a protic solvent. Therefore the Sn1 reaction would be favored.

The first step would be the carbocation formation followed by the attack of the nucleophile. In this case both isomers would be produced: R and S (see figure).

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2 years ago

How many molecules (not moles) of NH3 are produced from 5.25x10^-4 g of H2?

Oksi-84 [34.3K]

Answer:

not 100% but i think its 1.57x10^20

Explanation:

5.25x10^-4g / 2.016g

2.60x10^-4 x 6.022x10^23= 1.56x10^20 molecules

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3 years ago

Atoms with greatly different electronegativity values are expected to form _____. no bonds ionic bonds none of these covalent bo

Ad libitum [116K]

Atoms with greatly different electronegativity values are expected to form ionic bonds

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3 years ago

What happens in your cells with cellular respiration?

attashe74 [19]

Cellular respiration releases stored energy and glucose molecules and converts it into a form of energy that can be used by cells

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3 years ago

Read 2 more answers

What is a chemical treatment process used to remove dissolved ionic species from contaminated aqueous streams?

NeTakaya

Answer:

Ion exchange.

Explanation:

One of the ways in which water can be treated is through the process known as ION EXCHANGE. Using this for treating water has to do basically with the transfer or say the exchange of ions.

Ion exchanges is done by exchanging ions which are considered as 'unfit' or contaminants by the ones that are "fit".

Ions from what is known as zeolite or resin is been exchanged with the ions in the water. Cations are exchanged with cations and anions are exchanged with anions.

NB: this method is a good method or removing contaminants that are ions but not contaminants that are not ions.

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2 years ago