You tryna hook up stichXpika

gladu [14]

The answer is b
Bsbsndndjxjjdnsbsnzxncjjcjdx

5 0

3 years ago

We can model the 1,3,5-hexatriene as a box of length 0.904 nm, with 6 electrons in the first three energy levels. What is the fr

Naya [18.7K]

Answer:

v = 7.85 × 10¹⁴ Hz

Explanation:

The first three energy level can be represented as follows:

⇅ ------> n₄ = 4

⇅ ------> n₃ = 3

⇅ ------> n₂ = 0

ΔE = hv = $\frac{h^2}{8me^2}(n_4^2-n_3^2)$

ΔE = hv = $\frac{h^2}{8me^2}(4^2-3^2)$

ΔE = hv = $\frac{h^2}{8me^2}(16-9)$

ΔE = hv = $\frac{7*h^2}{8me^2}$

where h = planck constant = $6.626*10^{-34}$ J.s

mass (m) = $9.11*10^{-11}$

e = 0.904 nm = $0.9*10^{-9} m$

hv = $\frac{7*h^2}{8me^2}$

hv = $\frac{7*(6.6246*10^{-34})^2}{8*9.11*10^{-31}*(0.9*10^{-9})^2}$

hv = $\frac{3.07197276*10^{-66}}{5.90328*10^{-48}}$

hv = $5.20384051*10^{-19}$ J

v = $\frac{5.20384051*10^{-19}}{h}$

v = $\frac{5.20384051*10^{-19}J}{6.626*10^{-34}J.s}$

v = $7.85366814 *10^{14}s^{-1$

v = 7.85 × 10¹⁴ Hz (since s⁻¹ is equivalent to 1 Hz)

Thus, the frequency of an electronic transition from the highest-occupied orbital to the lowest-unoccupied orbital = 7.85 × 10¹⁴ Hz

7 0

3 years ago

Which best describes the current model of the atom?

slavikrds [6]

Explanation:

i think the answer might be D

8 0

3 years ago

_______ is the ability of the body to fight infection via antibodies or specialized cells.

VMariaS [17]

Answer:

Immunity

Explanation:

7 0

3 years ago

Explain the difference between elements and compounds, a teacher filled

stiv31 [10]

Answer:

Kindly check explanation.

Explanation:

So, without mincing words the solution to this particular Question is given below:

First, an ELEMENT is a that entity that has what is known as the atoms. Although, there might be more elements but the recognized elements are group into the periodic table/chart. Examples of elements are Hydrogen, Helium, Lithium, Beryllium, Boron, carbon, Nitrogen, oxygen, Fluorine, neon, sodium, magnesium, Aluminium and so on.

A COMPOUND consist of different elements that are chemically combined. Examples of compounds are; H2O, CaCO3, H2SO4, HNO3, MgCl2, NaCl, HCl and many more.

Also, elements has the same atoms while componds have different number of atoms since it is a combination of elements.

Finally, ELEMENTS can not be broken down through the use of chemical process while COMPONDS can be broken down through chemical processes.

To the second part of the question. The box that will represent elements will contain balls of the same colors and the balls are not joined together.

6 0

3 years ago