The IUPAC name for the compound FeS is "iron(II) sulfide." Therefore, option 3 is correct.
The IUPAC (International Union of Pure and Applied Chemistry) name is a systematic way of naming chemical compounds.
The compound FeS consists of iron (Fe) and sulfur (S) atoms. In FeS, iron has a +2 oxidation state, and sulfur has a -2 oxidation state.
According to the IUPAC nomenclature rules for naming inorganic compounds, the cation (iron) is named first, followed by the anion (sulfide).
To indicate the oxidation state of iron, the Roman numeral II is used in parentheses after the name "iron." The resulting name is "iron(II) sulfide."
To learn more about IUPAC, follow the link:
#SPJ6
Answer:
The answer is D) All the above
Explanation:
(3) the change in solubility of the reacting substances
(4) the energy released or absorbed during the reaction
Answer: (4) the energy released or absorbed during the reaction
Explanation: Potential energy diagram is the representation of energy with the course of reaction. It shows the energy of reactants, activation energy which is the energy required by the reactants to cross the energy barrier and the energy of the products.
Thus the difference of energy of products and energy of reactants gives us the energy released or absorbed during the reaction.
where = enthalpy of reaction
= energy of products
= energy of reactants
If > , energy is absorbed and reaction is endothermic
< , energy is released and the reaction is exothermic.
TRUE
FALSE
Answer:
False
Explanation:
The temperature at which solid changes into liquid is known as the melting point.
Energy is required for a solid to melt into a liquid.
However viscosity is known as friction in liquids. It is the force that opposes movements in liquid. Viscosity causes liquids to be sticky. It is measured as a force per unit area.
As such, melting is the change from solid to liquid and not viscosity.
The answer is thus false.
The statement about “Viscosity is the tendency of a solid to melt to a liquid” is false. It is melting not viscosity. Viscosity is the tendency of how the fluids flow.
Astrophysics and planetar Astrophysics and planetary science are considered subspecialties of Astronomy. Astronomy is the study of the sun, moon, planets, stars, comets, gas, galaxies, dust and other bodies and phenomena.
Note
Astrophysics - properties of space
Planetary Science - planet formation
I hope this helps, Regards.