UF CHM2045L Lab Exam With Questions
And Answers Latest Update 2026
A description of how close a measurement is to
Accuracy
the true value of the quantity measured.
a measure of how close a series of
Precision
measurements are to one another
the result has the same number of decimal
sig figs for addition and subtraction places as the measurement with the fewest
decimal places
the result has the same number of sig figs as the
sig figs for multiplication and division
term with the least number of sig figs
density formula D=m/v
|accepted value-measured value| / accepted
percent error formula
value x100
record the measured value plus one estimated
how to take a proper measurement
digit
how to take a proper liquid measurement read from the bottom of the miniscus
mass of solute/mass of solution x 100 ALSO
mass percent of solute mass of solute / (mass of solute + mass of
solvent) x 100
independent variable is graphed on the x-axis
dependent variable is graphed on the y-axis
finding moles (total grams) / (molar mass) = moles
(grams of water lost) / (grams of hydrate before
mass percent of water
it was heated) x 100
reduction gaining electrons
oxidation loss of electrons
And Answers Latest Update 2026
A description of how close a measurement is to
Accuracy
the true value of the quantity measured.
a measure of how close a series of
Precision
measurements are to one another
the result has the same number of decimal
sig figs for addition and subtraction places as the measurement with the fewest
decimal places
the result has the same number of sig figs as the
sig figs for multiplication and division
term with the least number of sig figs
density formula D=m/v
|accepted value-measured value| / accepted
percent error formula
value x100
record the measured value plus one estimated
how to take a proper measurement
digit
how to take a proper liquid measurement read from the bottom of the miniscus
mass of solute/mass of solution x 100 ALSO
mass percent of solute mass of solute / (mass of solute + mass of
solvent) x 100
independent variable is graphed on the x-axis
dependent variable is graphed on the y-axis
finding moles (total grams) / (molar mass) = moles
(grams of water lost) / (grams of hydrate before
mass percent of water
it was heated) x 100
reduction gaining electrons
oxidation loss of electrons
