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Contact [7]
3 years ago
11

Help me please somebody ??

Chemistry
1 answer:
Hunter-Best [27]3 years ago
7 0
The average mass of all the isoptopes of an element :)
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Which of the following pure liquids is the best solvent for sodium fluoride?a. CCl4b. C2C6c. HCld. BCl3e. PCl5
Julli [10]

Answer:

HCl

Explanation:

The best solvent for NaF is a polar liquid. The only liquid having a significant dipole moment among the options is HCl due to the large electro negativity difference between hydrogen and chlorine.

The polar solvent can interact with the NaF via its dipoles such that the NaF dissolves due to ion-dipole interaction.

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3 years ago
Which class of compounds contains only carbon, hydrogen, and nitrogen?
Likurg_2 [28]
<h2>Answer: </h2>

Nitrogen forms many thousands of organic compounds. Most of the known varieties may be regarded as derived from ammonia, hydrogen cyanide, cyanogen, and nitrous or nitric acid. The amines, amino acids, and amides, for example, are derived from or closely related to ammonia.

<h3>Explanation: </h3>

A carbohydrate has only Carbon, Hydrogen and Oxygen, with the hydrogen and oxygen in the ratio 2:1.

Examples are glucose C6H12O6 and table sugar C12H22O11

A protein is made of amino acids. Amino acids have an amino group which is −NH2.  

So without nitrogen atoms the compound cannot be a protein.

Nucleic acids are organic compounds that contain carbon, hydrogen, nitrogen but they also contains phosphorus and oxygen. They are made of smaller units called nucleotides.

So;

Simple Amines are the class of organic compounds that only contains Carbon, Hydrogen and Nitrogen.


5 0
3 years ago
Read 2 more answers
How did Neils Bohr change the model of the atom
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Bohr changed the model of the atom by proposing that electrons travelled in circular orbits with specific energy levels.
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Lithium has a specific heat of 3.560 J/gºC, and ethanol has a specific heat of 2.450 J/gºC. Based
creativ13 [48]

Answer:

they are both equal

Explanation:

if you don't know don't guess troll the teacher you will get it wrong anyway

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Which orbitals from a pi bond?
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B. The s orbital and two p orbitals

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