<span>4*10^27 is the correct answer
</span>
Answer:
z≅3
Atomic number is 3, So ion is Lithium ion (
)
Explanation:
First of all
v=f*λ
In our case v=c
c=f*λ
λ=c/f
where:
c is the speed of light
f is the frequency
Using Rydberg's Formula:
Where:
R is Rydberg constant=
z is atomic Number
For highest Energy:
n_1=1
n_2=∞
z≅3
Atomic number is 3, So ion is Lithium ion ()
In a chemical reaction, the equilibrium constant refers to the value of its reaction quotient at chemical equilibrium, that is, a condition attained by a dynamic chemical system after adequate time has passed, and at which its composition has no measurable capacity to undergo any kind of further modification.
The given reaction is: HCN (aq) + OH⁻ = CN⁻ (aq) + H2O (l)
The equilibrium constant = product of concentration of products / product of concentration of reactants
(Here, H2O is not considered as its concentration is very high)
So, Keq = [CN⁻] / [HCN] [OH⁻]
The correct option is B.
Alloy steel chains are usually opted for because they are strong, durable, resistant to abrasion and they have the ability to conform to the shape of the loads that they are carrying. In addition to all these properties, they also have the capacity to carry hot materials. These chains are typically made from various grades of alloys, therefore, manufacturers normally marked them in accordance with American Society for Testing and Maintenance guidelines. The chains are usually marked to show the following: size, grade, length and load capacity. The chain are often also marked with serial numbers and the manufacturers' names and brands.
Thus, all the facts mentioned about alloy steel chains in the options given above are correct. <span />
