The correct answer for the question that is being presented above is this one: "Electrovalency is characterized with the transferring of one or more electrons from one atom to another together with the formation of ions and as well as the number of positive and negative charges.
The Lewis and Langmuir theory of electrovalency (and as well as Kossel's) is dealing with Ionic bonds.
Lewis: electron-pair sharing, octet rule, Lewis Symbols or StructureLangmuir: introduced term "covalent" bond, and popularized Lewis's ideas
The Lewis-Langmuir electron-pair or covalent bond is referred as the homopolar bond, where the complete transfer of electrons give rise to ionic, or electrovalent bond (1) through attraction of opposite charges.
Answer:
Commonly, Overband Magnets are used to separate steel cans and Eddy Current Separators are used to expel and separate aluminium cans; The Aluminium Cans are discarded into general waste, which is then processed.
Explanation:
Chemical reaction (dissociation) of silver chromate in water:
Ag₂CrO₄(s) → 2Ag⁺(aq) + CrO₄²⁻(aq).<span>
Ksp(</span>Ag₂CrO₄) = [Ag⁺]²·[CrO₄²⁻].<span>
[</span>CrO₄²⁻] =
x.<span>
[</span>Ag⁺] =
2[CrO₄²⁻] = 2x<span>
Ksp = (2x)</span>² · x = 4x³.
Ksp is the solubility product constant <span>for a solid substance dissolving in an aqueous solution.</span>
[Ag⁺] is equilibrium concentration of silver cations.
[CrO₄²⁻] is equilibrium concentration of chromate anions.
Answer: 7.826 x 10^23 molecules
Explanation: 1 mole of NaOH is equal to 40 g, so we can start setting up the equation by saying that 52 g NaOH= 1 mole/40 g. Since one mole= 6.02 x 10^23 representative particles, or molecules, the next step in the equation is to multiply by 6.02 x 10^23/1 mole NaOH. The final equation comes out to be:
52 g NaOH = 1 mole/40g x 6.02 x 10^23/1 mole NaOH = __molecules NaOH
Now all that's left to do is to multiply across the top and divide by the bottom!