Which of the following is NOT a characteristic of stars? A) Size B) temperature C) texture D) color

Chemistry

1 answer:

Lynna [10]3 years ago

7 0

Answer:

Explanation:

Characteristics used to classify stars include color, temperature, size, composition, and brightness.

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Covalent bonds form due to the attraction between _____.

natima [27]

Answer:

the electron of one atom and the nucleus of another

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3 years ago

Some chemists believe that satisfaction of the octet rule should be the top criterion for choosing the dominant lewis structure

Fudgin [204]

Lewis structures refers to the diagrams used to signify the bonding between the atoms of a molecule and the lone pair of electrons, which may prevail in the molecule. These structures are drawn on the basis of the formal charge of each atom within the ion or molecule.

The formal charge refers to the charge assigned to an atom in a molecule, which all the electrons are shared equivalently amongst the atoms regardless of its electronegativity.

The rule for formal charge calculation is,

Formal charge = no of valency shell electron - 1/2 of the no of shared pair electron - no of lone pair electron.

So, in this case, the formal charge of P = 5 - 1/2 (10) - 0 = 0

The valence shell of P have 5 electrons. The total 5 bond is there in the given composition, so total 10 bonding electron, and there is no lone pair of electron on P atom. So, formal charge of P is 0.

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3 years ago

Which of the following statements about complete metamorphosis is TRUE?

azamat

ill answer if u answer this FAST

pls and ty brainly.com/question/22200936

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3 years ago

Draw a mechanism for the reaction of methylamine with 2-methylpropanoic acid. Draw any necessary curved arrows. Show the product

Nitella [24]

Answer:

See figure 1

Explanation:

On this case we have a base (methylamine) and an acid (2-methyl propanoic acid). When we have an acid and a base an acid-base reaction will take place, on this specific case we will produce an ammonium carboxylate salt.

Now the question is: ¿These compounds can react by a nucleophile acyl substitution reaction? in other words ¿These compounds can produce an amide? 

Due to the nature of the compounds (base and acid), the nucleophile (methylamine) doesn't have the ability to attack the carbon of the carbonyl group due to his basicity. The methylamine will react with the acid-producing a positive charge on the nitrogen and with this charge, the methylamine loses all his nucleophilicity.

I hope it helps!

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3 years ago

How are molecules built?

RoseWind [281]

Bonding I'm guessing

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