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3 years ago

Systematic name for Fe2O3 (s)

2 answers:

7 0

Cul (s) --> represents its state which means solid, Here Valency of copper is 1 so its cuprous.

<span>Fe2O3--> Ferric Oxide is a solid. Here valency of Fe is +3 so its Ferric </span>

<span>CoF2--> Cobalt Flouride is a solid</span>

<span>FeO --> Ferrous Oxide is a solid. Here valency of iron is +2 so its Ferrous. </span>

jenyasd209 [6]3 years ago

4 0

Answer : The name of $Fe_2O_3$ is, Iron(III) oxide.

Explanation :

$Fe_2O_3$ is an ionic compound because iron element is a metal and oxygen element is a non-metal. The bond formed between a metal and a non-metal is always ionic in nature.

The nomenclature of ionic compounds is given by:

1. Positive ion is written first.

2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.

3. In case of transition metals, the oxidation state are written in roman numerals in bracket in-front of positive ions.

The charge on iron is (+3) and the the charge on oxygen is (-2). That means the oxidation state of iron is (+3).

Hence, the name of $Fe_2O_3$ is, Iron(III) oxide.

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What kind of chemical bond is an insulator most likely to have? A. covalent bonds B. ionic bonds C. hydrogen bonds D. metallic b

mars1129 [50]

Answer is: A. covalent bonds.

Insulator most likely has covalent bonds, because it must have low electrical conductivity.

1) Substances with covalent bond not conduct an electric current in liquid and solid state, because they not have free ions or electrons.

2) Substances with ionic bond conduct an electric current in liquid, but not in solid state, because in liquids ions are mobile, contrary to solids where ions are fixed.

3) Substances with metallic bond conduct an electric current in liquid and solid state, because they have mobile electrons.

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3 years ago

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Si en un planeta la presión atmosférica es mayor que 5,1 atm terrestres, los habitantes podrían nadar en ríos de dióxido de carb

Sphinxa [80]

Answer:

Los habitantes del planeta con una atmósfera superior a 5,1 atm de la Tierra, no estarían nadando en ríos de dióxido de carbono líquido

Explanation:

De las tablas de datos termodinámicos, la presión a la que el vapor de dióxido de carbono está en equilibrio con su estado líquido a una temperatura ambiente de 25 ° C es 6,401 kPa, lo que equivale a 63,17296 atm.

Por lo tanto, a una presión de 5.1 de la atmósfera terrestre, el dióxido de carbono es completamente gaseoso y los habitantes del planeta con una presión atmosférica de 5.1 atm de la Tierra todavía observarían solo hidrógeno gaseoso y no estarían nadando en ríos de dióxido de carbono líquido.

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3 years ago

Which of the following are held together by nonpolar covalent bonds? PLEASE HELP

steposvetlana [31]

Answer:

The atoms of chlorine are held together by non-polar covalent bonds. Covalent bonds are formed between two or more atoms having zero or very small electronegativity difference. For homonuclear molecules where the two bonding atom are of the same kind, the electronegativity difference is zero.

C. Atoms of chlorine (CI)

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HELP <br> The question is in the picture, I will give 5 stars!

Fynjy0 [20]

The answer is 4.9 moles of salt will be needed to add to 1 kg of water to change the boiling point by 5 °C.

<h3>What is Boiling Point Elevation ?</h3>

Boiling point elevation is the phenomenon that occurs when the boiling point of a liquid (a solvent) is increased when another compound is added, such that the solution has a higher boiling point than the pure solvent.

Boiling point elevation occurs whenever a non-volatile solute is added to a pure solvent.

ΔT = i * Kb * m

where m, Kb and i are the molality of solution, ebullioscopic constant and Van't Hoff factor respectively

The data given in the question is ΔT = 5 °C

mass of solvent = 1 kg

Kb = 0.51 °C/(mol/kg)

Van't Hoff Factor for NaCl is 2

Substituting the values in the above equation

$\rm 5 = \rm\dfrac{2\times0.51\times moles \;of \;salt}{1}$

$\rm moles \;of \;salt = \rm\dfrac{5}{2\times0.51}$

moles of salt = 4.9

Therefore 4.9 moles of salt will be needed to add to 1 kg of water to change the boiling point by 5 °C.

To know more about Boiling point elevation

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2 years ago

What type of ionic compound is CO3?

erastova [34]

Answer:

Carbon Trioxide

Explanation:

Its a Carbonite Ion which is also known as a polyatomic ion

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3 years ago