Answer:
2-Methyl-5-nitrothiophene
Explanation:
The 2- and 5-positions of thiophene are the most susceptible to electrophilic aromatic substitution.
Thus, the major product from the reaction of 2-methylthiophene with HNO₃ in acetic acid is 2-methyl-5-nitrothiophene.
When electrons are filling energy levels, the lowest energy sublevels are occupied first. This is Hund's rule.
Hund's rules state that:
Every orbital in a sublevel has to be singularly occupied before any other orbital is able to be doubly occupied.
All of the electrons in single occupied orbitals have to have the same spin to maximize the total spin.
Changing the number of NEUTRONS makes an atom stable or unstable and creates different isotopes of the same element with a different ATOMIC MASS
Answer:
λ = 555.55 nm
Explanation:
the photon energy equation
∴ h = 6.626 E-34 J*s.....Planck's constant
∴ f = 5.4 E14 s-1
⇒ E = (6.626 E-34 J*s)(5.4 E14 s-1) = 3.578 E-19 J
∴ E = hc/λ
⇒ λ = hc/E
∴ c ≅ 3.0 E8 m/s
⇒ λ = ((6.626 E-34 J*s)(3.0 E8 m/s))/(3.578 E-19 J)
⇒ λ = (5.555 E-7 m)×(1 E9 nm/m) = 555.55 nm
Answer:
Yes there can
Explanation:
I am actually currently learning this in advanced science.
In the correct terms there can be.
