C/P Flashcards

(31 cards)

1
Q

converging:

o > f

A

real, inverted image

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2
Q

converging:

o = f

A

no image

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3
Q

converging:

o < f

A

virtual, upright image

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4
Q

converging:

o at infinity

A

image at f

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5
Q

Diverging:

A

image is always virtual and upgright

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6
Q

real images = +

A

for a lens, real images form on the other side of the lens from the object

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7
Q

virtual images = -

A

for a lens, virtual images form on the same side of the lens as the object

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8
Q

Kb =

A

[OH-][HB] / [B-]

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9
Q

Avogadro’s #

A

6.02 x 10^23

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10
Q

Ka =

A

[A-][H+] / [HA]

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11
Q

amino acids that have two chiral centers

A

isoleucine and threonine

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12
Q

anomer

A

diasteromer that differs only at the anomeric carbon

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13
Q

reduction of carboxylic acid to 1 alcohol

A

by BH3

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14
Q

reduction of ketone to 1 alcohol

A

NaBH4

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15
Q

dash means chari conformation

A

down

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16
Q

wedge means chair conformation

17
Q

positive specific rotation

A

clockwise but S

18
Q

Negative specific rotation

A

counterclockwise but R

19
Q

SN1 reactions react fastest with

A

tertiary then secondary then primary then methyl

20
Q

Longer retention time indicattes

A

greater affinity for the stationary phase and less affinity for the mobile phase

21
Q

Simple distiliation

A

less than 150 degrees but more than 25 degrees apart

22
Q

Vaccum distiliation

A

when they have a boiling point above <150 degrees

23
Q

fractional distilation

A

when they are less than 25 degrees apart

24
Q

gas liquid retention time is based on

A

larger MWs and higher boiling point

25
High-performance liquid chromatographhy
small sample sizes mobile phase under pressure separates based on polarity
26
what does UV do to electrons
excites them by UV light
27
Normal HPLC
non polar mobile phase polar stationary phase
28
Reverse HPLC
non polar stationary phase polar mobile phase
29
Polar mobile phases for HPLC
water, methanol, acetone
30
Nonpolar mobile phases for HPLC
Hexanes
31
Polar stationaruy phases for HPLC
silica