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Masja [62]
3 years ago
15

Which is untrue about covalent compounds?

Chemistry
2 answers:
Elodia [21]3 years ago
7 0

Answer: Have high melting point.

Explanation:

Covalent compounds are known to have low melting point because they have weak forces of attraction between the binding molecules, so low amount of energy is needed to break the binding force.

scoundrel [369]3 years ago
3 0

The untrue statement is that they high melting points.  

The covalent compounds are the compounds exhibiting strong intra-molecular bonds. This is due to the tightness of the atoms within the covalent molecules. The force of attraction between the individual molecules in a covalent compound seems to be weak. The covalent compounds exhibit weak intermolecular forces that hold the atoms together due to this they have a low melting point.  


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0.077M

Explanation:

Step 1:

The balanced equation for the reaction. This is given below:

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From the balanced equation above,

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The mole ratio of the base (nB) = 1

Step 2:

Data obtained from the question.

Concentration of base Cb =...?

Volume of base (Vb) = 10mL

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Volume of acid (Va) = 15.4mL

Step 3:

Determination of the concentration of the base, Mg(OH)2.

The concentration of the base can be obtained as follow:

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Cross multiply to express in linear form

Cb x 10 x 2 = 0.1 x 15.4

Divide both side by 10 x 2

Cb = (0.1 x 15.4) /(10 x 2)

Cb = 0.077M

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