CHEMISTRY COMMUNITY

Ali Polansky 1A

The significance that electrons have wave properties is that particles can behave like waves; this information verifies the de Broglie equation λ=hp .

Ali Polansky 1A

Ψ means wavefunction.
the equation is E(wavefunction)= H (wavefunction)

where H= hamiltonian (double derivative)
E= energy of the electron

Ali Polansky 1A

Can someone explain the Stern and Gerlach experiment (how it was conducted/ what it demonstrated?)

Ali Polansky 1A

Yes, both properties exist simultaneously. I found this video to be helpful in explaining the duality of light as a wave and as a particle.
https://www.youtube.com/watch?v=h1tflE-L2Dc

Ali Polansky 1A

The photoelectric experiment supports the particle model of light because even with high-intensity light, electrons were not always emitted, proving light does not only have wave properties; if it did, higher intensity would always mean more electrons emitted. When the energy to remove electrons is ...

Ali Polansky 1A

What is molecular spectroscopy and can it be used to identify molecules as atomic spectroscopy is used to identify elements?

Ali Polansky 1A

Thank you! So what determines whether the photons have sufficient energy to remove an electron?

Ali Polansky 1A

If intensity doesn't affect electrons being emitted (because in this experiment light doesn't act like a wave), then what has to increase for more electrons to be emitted? I know it's the one-photon one-electron model, but how does the number of photons increase?

Ali Polansky 1A

0.005 moles is the number of moles each plant receives of NH4NO3. To find moles of N atoms each plant will receive you take 0.005 moles and multiply by the molar ratio (2 moles of N atoms: 1 mole of NH4NO3) so each plant receives 1 x 10^-2 moles of nitrogen atoms.

Ali Polansky 1A

Yes, they would have the same amount in moles because you have to divide both numbers of atoms by Avogadro's number to find the amount in moles (so both answers are 7.36 x 10^27 divided by 6.022 x 10^23

Ali Polansky 1A

You can find the empirical formula from the molecular by simplifying the ratio. For example, IF the molecular formula was Os3C12O12, the ratio 3:12:12 can be simplified to 1:4:4, so the empirical formula would be OsC4O4

Ali Polansky 1A

You need to use the molar ratio of moles per oxygen atom to moles of Epsom salt. (11 to 1)
(Four of the oxygen moles come from Epsom salt and seven come from the water)

magnesium sulfate heptahydrate= MgSO4 7H2O

Ali Polansky 1A

(a) We know the excess reactant is BrF3 because if we carry out the chemical reaction with 12 mol of ClO2 then only 4 moles of BrF3 are needed. (This is because the molar ratio is 6:2 or 3:1 in the balanced chemical equation.) (b) We can estimate how many moles of each product will be produced using...

Ali Polansky 1A

When the polyatomic is grouped with parenthesis, in my opinion, it's easier to balance the equation looking at the polyatomic as one entity. Either way, all the atoms should we balanced bc of the law of conservation of mass.

Ali Polansky 1A

Hey does anyone have any tips on naming ionic/ molecular compounds? Some problems where we balance equations, it requires to write the formula from the word problem.

CHEMISTRY COMMUNITY

Search found 15 matches

Re: Wave Properties of electrons

Re: Schrodinger Equation

Stern and Gerlach

Re: Wave vs particle properties

Re: Wave-Particle Behavior

Atomic spectroscopy vs molecular

Re: Intensity, frequency, and wavelength

Intensity, frequency, and wavelength

Re: G13

Re: Fundamental E 17

Re: Clarification

Re: HW #E9

Re: Homework M.5

Re: Balancing chemical reactions with polyatomic ions [ENDORSED]

Naming ionic/ molecular compounds