UF CHM 2045L LAB EXAM
QUESTIONS WITH 100%
VERIFIED ANSWERS.
Accuracy -- Answer ✔✔ A description of how close a measurement is to
the true value of the quantity measured.
Precision -- Answer ✔✔ a measure of how close a series of
measurements are to one another
sig figs for addition and subtraction -- Answer ✔✔ the result has the
same number of decimal places as the measurement with the fewest
decimal places
sig figs for multiplication and division -- Answer ✔✔ the result has the
same number of sig figs as the term with the least number of sig figs
density formula -- Answer ✔✔ D=m/v
percent error formula -- Answer ✔✔ |accepted value-measured value| /
accepted value x100
how to take a proper measurement -- Answer ✔✔ record the measured
value plus one estimated digit
how to take a proper liquid measurement -- Answer ✔✔ read from the
bottom of the meniscus
mass percent of solute -- Answer ✔✔ mass of solute/mass of solution x
100 ALSO mass of solute / (mass of solute + mass of solvent) x 100
QUESTIONS WITH 100%
VERIFIED ANSWERS.
Accuracy -- Answer ✔✔ A description of how close a measurement is to
the true value of the quantity measured.
Precision -- Answer ✔✔ a measure of how close a series of
measurements are to one another
sig figs for addition and subtraction -- Answer ✔✔ the result has the
same number of decimal places as the measurement with the fewest
decimal places
sig figs for multiplication and division -- Answer ✔✔ the result has the
same number of sig figs as the term with the least number of sig figs
density formula -- Answer ✔✔ D=m/v
percent error formula -- Answer ✔✔ |accepted value-measured value| /
accepted value x100
how to take a proper measurement -- Answer ✔✔ record the measured
value plus one estimated digit
how to take a proper liquid measurement -- Answer ✔✔ read from the
bottom of the meniscus
mass percent of solute -- Answer ✔✔ mass of solute/mass of solution x
100 ALSO mass of solute / (mass of solute + mass of solvent) x 100
