The molar mass of I2 : 283.81 g/mol
<h3>Further explanation
</h3>
Given
I2 compound
Required
The molar mass
Solution
Relative atomic mass (Ar) of element : the average atomic mass of its isotopes
Relative molecular weight (M) : The sum of the relative atomic mass of Ar
M AxBy = (x.Ar A + y. Ar B)
So for I2 :
= 2 x Ar I
= 2 x 126.90447 g/mol
= 253.
809 g/mol
= 253.81 g/mol
Answer:
so I will answer the first question: so if the waning gibbous happened on July 1 then you would expect the waxing crescent.
Answer is: iron is oxidized to form rust.
Chemical reaction: Fe + O₂ → Fe₂O₃.
Oxidation half reaction: Fe⁰ → Fe⁺³ + 3e⁻ /×4; 4Fe⁰ → 4Fe⁺³ + 12e⁻.
Reduction half reaction: O₂⁰+ 4e⁻ → 2O⁻²/×3; 3O₂⁰+ 12e⁻ → 6O⁻².
Balanced chemical reaction: 4Fe + 3O₂ → 2Fe₂O₃.
Oxidation is increase of oxidation number, iron is oxidized from oxidation number 0 (Fe) to oxidation number +3 (in rust Fe₂O₃).
Answer:
combustion or/and oxidation
Explanation:
Lead chloride rises five fold in solubility on heating at temperature of .
Solubility is defined as the capability of solute to dissolve in the solvent. It can be determine in terms of maximum quantity of particle or solute is dissolved in a solvent at equilibrium.
Five fold in solubility refers to the five times increase in solubility. Maximum five folds of solubility can be obtained from lead chloride .
At room temperature, lead chloride is not soluble in water but in hot water lead chloride is soluble in water i.e. at .
Thus, five folds in solubility can be obtained from lead chloride in comparison to other chlorides as they don't give five folds in solubility.