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Flashcards in Test one Deck (42)
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1

whats the capacity for p-10

.5 microliters to 10 microliters

2

whats the accuracy for p-10

.2 microliters

3

whats the capacity for p-20

2 to 20 microliters

4

whats the accuracy for p-20

.2 microliters

5

whats the capacity for p-200

20 microliters to 200 microliters

6

whats the accuracy for p-200

2 microliters

7

whats the capacity for p-1000

200 microliters to 1000 microliters

8

whats the accuracy for p-1000

20 microliters

9

how to find percent error

(measured-avg)x 100

10

what are the units for molarity

mol/L

11

what are the units for molecular weight

g/mol

12

molecular weight can also be expressed in

daltons

13

when two components at the same concentration are mixed whats the dilution

no dilution

14

what is spectrophotometry

measurement of how much a chemical substance absorbs or transmits

15

what is a wavelength

distance between two consecutive crests or troughs

16

what is amplitude

height of wave crest above the reference line, shows intensity of wave

17

what is frequency

number of oscillations per second

18

shorter wavelength has what type of energy

high

19

longer wavelength has what type of energy

low

20

visible light wavelength range

340 to 800

21

UV wavelength range

200 to 340

22

when the electron falls back into the ground state, the excess energy is lost as

heat or fluorescence

23

white light is composed of

all colors

24

if an object absorbs all wavelengths of visible light, it appears...

black

25

if the absorption spectra is showing for a certain color, what happens

the complimentary color is shown

26

absorbance is proportional to what

length of sample holder and concentration

27

units for extinction coefficient

M-1, cm-1

28

purpose of bradford assay

measure protein concentration

29

units of dalton are

g/mol

30

you can estimate molar extinction coefficient usin

amino acid composition