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Chem Lab Terms Test

Enter the letter for the matching Definition
incorrect
1.
argentometric titration
incorrect
2.
Gaussian distribution
incorrect
3.
degrees of freedom
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4.
displacement titration
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5.
direct titration
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6.
Absorbance→
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7.
equilibrium concentration
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8.
molarity
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9.
density
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10.
standard devation
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11.
pooled standard deviation
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12.
t statistic
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13.
systematic error
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14.
pipet
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15.
indeterminate error
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16.
gravimetric analysis
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17.
wavelength
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18.
hygroscopic
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19.
desiccator
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20.
KHP
A.
closed chamber containing drying agent—to keep samples dried
B.
pooled standard deviation to make use of multiple sets of data
C.
bases
D.
the actual concentration
E.
absorbs/ attracts moisture from air
F.
ratio of the departure of an estimated parameter from its notional value and its standard error
G.
mass of product is measured to determine how much unknown was present
H.
characterized by a mean and standard deviation—mean is center of distribution and standard deviation is width→ (bell shaped curve)
I.
most useful quantitity for chemical analysis (A)—higher the absorbance
J.
analyte is treated with excess of a second metal bound to EDTA. The analyte ion displaces the second metal from the EDTA complex
K.
a way to determine the contents of a substance quantitatively.
L.
moles solute/ L solution
M.
(random error)- from experiment
N.
measure of width of distribution
O.
crest- to- crest distance between waves
P.
error in process or equipment
Q.
titrations iinvolving Ag+
R.
used to transfer known amount of liquid- can go to 4 s.f.
S.
(n-1)
T.
m/v
Type the Definition that corresponds to the displayed Term.
incorrect
21.
molar absorptivity
Type the Term that corresponds to the displayed Definition.
incorrect
22.
repeatable if measurement made same way (correctable)
incorrect
23.
measurement of how close measurements are to each other
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24.
absorbs/ attracts moisture from air
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25.
test for an outlier
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26.
for of volumetric analysis in which the formation of a colored complex is used to indicate the endpoint of a titration
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27.
measures to 2 decimal places
incorrect
28.
measures to 2 decimal places
incorrect
29.
pure enough to weigh and use directly for number of moles
incorrect
30.
measure to 4 decimal places

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