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Svetradugi [14.3K]
4 years ago
5

Which of these is NOT a characteristic of metals and their ability to form metallic bonds?

Chemistry
2 answers:
mixas84 [53]4 years ago
7 0

The insulator is not a characteristic of metals and their ability to form metallic bonds.

C)  insulator

<u>Explanation:</u>

Atoms quickly lose electrons to form positive ions in metals. Further, the delocalized electrons that surround these ions are responsible for their conductivity. The electrostatic interactions between ions and the electron cloud are called the metallic bond.  

The physical properties include malleability, thermal, ductility, strength, opacity, conductivity, and luster. Malleability is the deformation property, and ductility is the stretching capacity of atoms in a metallic bond.

den301095 [7]4 years ago
4 0

Answer:

The correct answer is C) insulator

Explanation:

The characteristics of metals consist of conductivity (for example of heat), malleability (deformation property) and ductility (stretching capacity).

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<u>Answer:</u> 1.2 moles of carbon dioxide is produced for the given value of oxygen.

<u>Explanation:</u>

The chemical reaction for the combustion of acetylene follows the equation:

2C_2H_2+5O_2\rightarrow 4CO_2+2H_2O

By stoichiometry of the reaction:

5 moles of oxygen produces 4 moles of carbon dioxide.

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3 years ago
If given the mole fraction of water in an aqueous sucrose (C12H22O11) solution and asked to calculate the molality of the soluti
olasank [31]

Answer:

No additional information is required in order to calculate the molality of the solution.

Explanation:

Mole fraction of water = \chi_1

Mole fraction of sucrose = \chi_2

\chi_1+\chi_2=1

From the given mole fraction of water mole fraction of sucrose can be determined.

And from both values of mole fraction moles of water and sucrose can also be calculated.

\chi_1=\frac{n_1}{n_1+n_2}

\chi_2=\frac{n_2}{n_1+n_2}

After calculating the moles of water convert them into mass of water in grams and then change that into kilograms say that be M'.

Finally we can determine the molality of solution ;

Molality=\frac{\text{Moles of compound}}{\text{mass of solvent (kg)}}

Molality of the sucrose solution ;

m=\frac{n_1}{M'}

From this we can conclude that no additional information is required in order to calculate the molality of the solution.

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