Memorize for Exam 1

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Last updated 12:44 AM on 9/25/26
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15 Terms

1
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1cm3 = ___ mL

1

2
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C to K

C + 273 = K

3
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% yield =

AY/TY x 100

4
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mass % composition Qs assume. . .

100g of solution

5
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NRG of photon equations:

E = hc/(wavelength)

E = h(frequency)

<p>E = hc/(wavelength)</p><p>E = h(frequency)</p>
6
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NRG of ground sate for H2 atom (K) =

K = -2.18 × 10-18 J

7
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axial node (angular)

  • planar or cone shaped

  • = angular momentum quantum # (l)

  • l = n-1


8
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radial node

  • spherical

  • = n - l - 1


9
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GRAPH: (psi) vs. r

  • = wave function of e-

  • when psi=0 → there is no e- at that point

  • crosses horizontal axis = radial node


<ul><li><p>= wave function of e-</p></li></ul><ul><li><p>when psi=0 → there is no e- at that point</p></li><li><p>crosses horizontal axis = radial node</p></li></ul><p></p>
10
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GRAPH: (psi)2 vs. r

  • = e- density

  • crosses horizontal axis = radial node


<ul><li><p>= e- density </p></li><li><p>crosses horizontal axis = radial node</p></li></ul><p></p>
11
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GRAPH: (psi)2 × 4pi(r)

= probability of finding e- anywhere at avg. radius

  • (amplitudes get larger further from origin bc. overall possible surface area where e- could be located is increasing w/ each orbital

  • crosses horizontal axis = radial node


<p>= probability of finding e- anywhere at avg. radius </p><ul><li><p>(amplitudes get larger further from origin bc. overall possible surface area where e- could be located is increasing w/ each orbital</p></li></ul><ul><li><p>crosses horizontal axis = radial node</p></li></ul><p></p>
12
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speed of light (C)=

C = 3 × 108 m/s

13
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plank’s constant (h) =

h = 6.62 × 10-34 J/s

14
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Equation for NRG of a Hydrogen photon at n=__ formula:

E = k(z2/n2)

15
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z in H-photon NRG formula =

z = number of protons (1)