Answer:
ΔE = 13.056 ev
Explanation:
Energy associated with nth state is,
En = -13.6/n²
For n = 1
E₁ = -13.6 / 1²
E₁ = -13.6/1
E₁ = -13.6 ev
Kinetic energy of electron = -E₁ = 13.6 ev
For n = 5
E₅ = -13.6 / 5²
E₅ = -13.6/25
E₅ = -0.544 ev
Kinetic energy of electron = -E₅ = 0.544 ev
Wavelength of radiation emitted:
ΔE = hc/λ = E₅ - E₁
by putting values,
ΔE = -0.544ev - (-13.6 ev )
ΔE = 13.056 ev
Answer
We can’t see what you upload
Explanation
Sedimentation and decantation
Answer:
specialized if you add one more I cause I'm pretty sure there is supposed to be one more i.
Answer:
Balanced Equation for reaction between Magnesium and Oxygen:
2Mg + O₂ --> 2MgO
Molar Mass of MgO is the atomic masses listed on the periodic table for the two elements Magnesium and Oxygen. Magnesium's molar mass is 24g/mol, and Oxygen's molar mass is 16g/mol. So MgO's molar mass would be 24 + 16 = 40g/mol.
The equation to find moles is:
So if we rearrange this equation to find for mass:
So you have to multiply 0.300 moles by 40, which gives you 12g
Meaning the mass of Magnesium Oxide is 12g.