Explanation:
Each orbital within a particular sublevel is distinguished by its value of ml. This quantum number may be more aptly named the orbital orientation quantum number. In each energy sublevel (designated by l) there are 2l+1 possible independent orientations of the electron cloud.
Answer:
A. No photoelectrons < C. KE = 51 kJ·mol⁻¹ < B. KE = 155 kJ·mol⁻¹
632 nm < 455 nm < 325 nm
Explanation:
The equation for the photoelectric effect is
E = hf = Φ + KE
That is, the energy (hf) of the incident photon is used to eject an electron from the surface of the metal ( the work function, Φ), and anything left over goes into the kinetic energy (KE) of the electron.
1. Calculate the relative energies of the three wavelengths
E = hf
fλ = c or f = c/λ. So,
E = (hc)/λ
The energy is inversely proportional to the wavelength. Thus, the order of increasing energies is
632 nm < 455 nm < 325 nm
2. Assign the radiation to the observations.
Solve the photoelectric equation for KE.
E = Φ + KE
KE = E - Φ
If E < Φ, the light does not have enough energy to eject a photoelectron.
Once E > φ, the greater the value of E, the greater the value of KE.
The order of energies is
A. No photoelectrons < C. KE = 51 kJ·mol⁻¹ < B. KE = 155 kJ·mol⁻¹
632 nm < 455 nm < 325 nm
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Answer:
The moles of sucrose that are available for this reaction is 0.0292 moles
Explanation:
Combustion is an specifyc reaction where the reactants react with O₂ in order to produce CO₂ and H₂O
This combustion is: C₁₂H₂₂O₁₁ + 12O₂ → 12CO₂ + 11H₂O
We have to conver the mass to moles, to find out the limiting reactant
10 g . 1 mol / 342 g = 0.0292 moles of sucrose
8 g . 1mol / 32g = 0.250 moles of O₂
The moles of sucrose that are available for this reaction is 0.0292 moles
Before we start to work with the equation we must find the limiting reactant. When you find it, you can do all the calculations.
Answer:
Explanation:
Combustion can be defined as the burning of a compound in the presence of oxygen to produce carbon dioxide and water. Because it involves the release of heat (energy), it is referred to as an exothermic reaction.
Fuel is an <u>organic compound</u> and it's combustion will also go through the process above and also <u>releases heat (exothermic reaction)</u> into the atmosphere after burning. However, same can be said about forest fire also; as the forest is made up of plants (whose major <u>constituents are organic </u>also). The forest fire can also be termed as combustion because it burns in the presence of oxygen, <u>releasing heat (energy) into the atmosphere</u> (which also makes it an <u>exothermic reaction</u>).