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sveta [45]
3 years ago
10

Which formula represents an ionic compound? (1) NaCl (3) HCl (2) N2O (4) H2O

Chemistry
2 answers:
Juliette [100K]3 years ago
8 0
NaCl consists of a salt, which is a nonmetal (Na) and Cl, which is a metal. When a nonmetal and a metal are combined, it makes the compound ionic.
Andrew [12]3 years ago
8 0

Answer is: 1) NaCl.

NaCl is sodium chloride, ionic compound.

Ionic compounds are made of ions held together with ionic bonds.  

Ionic bond forms when a cation transfers its extra electron to an anion who needs it.  

Electronegativity (χ) is a property that describes the tendency of an atom to attract a shared pair of electrons.  

Δχ(Na-Cl) = 3.2 - 0.95 = 2.25; electronegativity difference between sodium and chlorine.

When the electronegativity difference is greater, the bond polarity is increasing.

Other compound have covalent polar bonds.

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Rank the following aqueous solutions in order of increasing<br> (c) freezing point;
saveliy_v [14]

0.01 m AgNO_{3} < 0.03 m CuSO_{4}< 0.04 m urea

As molal concentration rises, so does freezing point depression. It can be expressed mathematically as ΔTf = Kfm.

<h3>What is Colligative Properties ?</h3>
  • The concentration of solute particles in a solution, not the composition of the solute, determines a colligative properties .
  • Osmotic pressure, boiling point elevation, freezing point depression, and vapor pressure reduction are examples of ligand-like properties.
<h3>What is freezing point depression?</h3>
  • When less of another non-volatile material is added, the temperature at which a substance freezes decreases, a process known as Freezing-point depression.
  • Examples include combining two solids together, such as contaminants in a finely powdered medicine, salt in water, alcohol in water.
  • An significant factor in workplace safety is freezing points.
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5 0
1 year ago
Materials that conduct heat and electricity well in the solid state result when: 1. metals bond with metals 2. any type of eleme
Andre45 [30]
Answer: Metals bond with metals.  
Explanation: A metallic bond is a sharing of electrons between many atoms of a metal element. Metallic bonding is when positive ions (metals) are in a 'sea of negative electrons'. The electrons are delocalised, which means they can move around easily and carry charge, and this enables it to conduct electricity, even in a solid state. The big pool of electrons is like a free-for-all in that any valence electron can move to any atom within the material.
7 0
3 years ago
The combustion of carbohydrates and the combustion of fats are both exothermic processes, yet the combustion of carbohydrates is
Julli [10]

Explanation:

There are two aspects of a reaction:

Thermodynamics:

Combustion of the compound is reaction with oxygen.

The carbohydrates contain more content of oxygen as compared to fats.

Hence, carbohydrates have lot of oxygen content which are already partially oxidized as compared to fats. Hence, combustion of the carbohydrates is a faster process.

Kinetics:

The molecular reacts also shows that the combustion of the carbohydrates is a faster process.

7 0
4 years ago
(01.07 но) An experiment was conducted to determine the density of a liquid. The table shows a partial record of the experiment
Anestetic [448]

Answer:

How do you find the density of a liquid experiment?

To measure the density of a liquid you do the same thing you would for a solid. Mass the fluid, find its volume, and divide mass by volume. To mass the fluid, weigh it in a container, pour it out, weigh the empty container, and subtract the mass of the empty container from the full container.

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2 years ago
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