UF CHM2045L Lab Exam Questions And
Answers Graded A+ 2024.
Accuracy - correct answer. A description of how close a measurement is to the true
value of the quantity measured.
Precision - correct answer. a measure of how close a series of measurements are to
one another
sig figs for addition and subtraction - correct answer. the result has the same
number of decimal places as the measurement with the fewest decimal places
sig figs for multiplication and division - correct answer. the result has the same
number of sig figs as the term with the least number of sig figs
density formula - correct answer. D=m/v
percent error formula - correct answer. |accepted value-measured value| / accepted
value x100
how to take a proper measurement - correct answer. record the measured value
plus one estimated digit
how to take a proper liquid measurement - correct answer. read from the bottom of
the miniscus
mass percent of solute - correct answer. mass of solute/mass of solution x 100
ALSO mass of solute / (mass of solute + mass of solvent) x 100
independent variable is graphed on the - correct answer. x-axis
dependent variable is graphed on the - correct answer. y-axis
Answers Graded A+ 2024.
Accuracy - correct answer. A description of how close a measurement is to the true
value of the quantity measured.
Precision - correct answer. a measure of how close a series of measurements are to
one another
sig figs for addition and subtraction - correct answer. the result has the same
number of decimal places as the measurement with the fewest decimal places
sig figs for multiplication and division - correct answer. the result has the same
number of sig figs as the term with the least number of sig figs
density formula - correct answer. D=m/v
percent error formula - correct answer. |accepted value-measured value| / accepted
value x100
how to take a proper measurement - correct answer. record the measured value
plus one estimated digit
how to take a proper liquid measurement - correct answer. read from the bottom of
the miniscus
mass percent of solute - correct answer. mass of solute/mass of solution x 100
ALSO mass of solute / (mass of solute + mass of solvent) x 100
independent variable is graphed on the - correct answer. x-axis
dependent variable is graphed on the - correct answer. y-axis
