UF CHM2045L Lab Exam With Questions And Answers Latest
Update 2026
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 miniscus
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
independent variable is graphed on the - (answer)x-axis
dependent variable is graphed on the - (answer)y-axis
finding moles - (answer)(total grams) / (molar mass) = moles
Update 2026
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 miniscus
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
independent variable is graphed on the - (answer)x-axis
dependent variable is graphed on the - (answer)y-axis
finding moles - (answer)(total grams) / (molar mass) = moles
