Hello!
Find the Energy of the Photon by Planck's Equation, given:
E (photon energy) =? (in Joule)
h (Planck's constant) = ![6.626*10^{-34}\:J * s](https://tex.z-dn.net/?f=%206.626%2A10%5E%7B-34%7D%5C%3AJ%20%2A%20s%20)
f (radiation frequency) =
Therefore, we have:
![E = h*f](https://tex.z-dn.net/?f=%20E%20%3D%20h%2Af%20)
![E = 6.626*10^{-34}*8*10^{12}](https://tex.z-dn.net/?f=%20E%20%3D%206.626%2A10%5E%7B-34%7D%2A8%2A10%5E%7B12%7D%20)
![E = 53.008*10^{-34+12}](https://tex.z-dn.net/?f=%20E%20%3D%2053.008%2A10%5E%7B-34%2B12%7D%20)
![E = 53.008*10^{-22}](https://tex.z-dn.net/?f=%20E%20%3D%2053.008%2A10%5E%7B-22%7D%20)
![\boxed{\boxed{E = 5.3008*10^{-21}\:Joule}}\end{array}}\qquad\checkmark](https://tex.z-dn.net/?f=%20%5Cboxed%7B%5Cboxed%7BE%20%3D%205.3008%2A10%5E%7B-21%7D%5C%3AJoule%7D%7D%5Cend%7Barray%7D%7D%5Cqquad%5Ccheckmark%20)
I Hope this helps, greetings ... DexteR! =)
Answer:
7 meters per second was her speed
Answer:
<h2>3.92 g/cm³</h2>
Explanation:
The density of a substance can be found by using the formula
![density = \frac{mass}{volume} \\](https://tex.z-dn.net/?f=density%20%3D%20%20%5Cfrac%7Bmass%7D%7Bvolume%7D%20%5C%5C)
From the question we have
![density = \frac{1000}{255} \\ = 3.921568...](https://tex.z-dn.net/?f=density%20%3D%20%20%5Cfrac%7B1000%7D%7B255%7D%20%20%5C%5C%20%20%3D%203.921568...)
We have the final answer as
<h3>3.92 g/cm³</h3>
Hope this helps you
Answer:
a.Phenols have the ability to spread out the negative charge that forms.
Explanation:
This happens because of the aromatic ring the phenols have. When loosing the proton, the anion formed have different resonance isomers due to the double bonds in the aromatic ring. This resonance makes the anion more stable and prevents the reaction going backwards.
On the other hand, regular alcohol doesn't have resonace and the reaction of loosing the proton goes leftward and righward: is in equilibrium.
That equilibrium decreases the acidity of the alcohol.
In chemistry, the molar mass M is a physical property defined as the mass of a given substance (chemical element or chemical compound) divided by its amount of substance. The base SI unit for molar mass is kg/mol. However, for historical reasons, molar masses are almost always expressed in g/mol.
Hope this helped!
Good luck :p
~Emmy <3