CHM 2045 L UF 2024/2025 LAB
EXAM QUESTIONS WITH 100%
ACCURATE ANSWERS.
Percent error formula -- Answer ✔✔ calculated value minus expected
value l value divided by expected value times 100
Find density given unknown concentration graph y=mx+b -- Answer
✔✔ y is density and x is mass % so sub value of y to find x
Density formula -- Answer ✔✔ mass/ volume
Hydrate definition -- Answer ✔✔ crystalline compound in which one or
more water molecules combine with formula unit of walt that loses
water above 100c
% water= mass water lost/ mass hydrate times 100 -- Answer ✔✔
Mass water lost= -- Answer ✔✔ unheated mass minus mass after
heating
PH2= -- Answer ✔✔ ptotal - pvapor
Ptotal= patm-pfluid -- Answer ✔✔
h1d1=h2d2 -- Answer ✔✔
p1v1/t1=P2V2/T2 -- Answer ✔✔
Molarity= moles/volume in L -- Answer ✔✔
, Q= -- Answer ✔✔ mCgDelta T Q is the symbol for heat transfer, m is
the mass of the substance, and ΔT is the change in temperature. The
symbol c stands for specific heat and depends on the material and
phase
Lowest energy color -- Answer ✔✔ red
Smallest electronic transitions -- Answer ✔✔ lowest atomic #
Highest energy color is -- Answer ✔✔ violet
molality= -- Answer ✔✔ moles/kg
Calculate i= -- Answer ✔✔ mass particles/ moles compound dissolved
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
EXAM QUESTIONS WITH 100%
ACCURATE ANSWERS.
Percent error formula -- Answer ✔✔ calculated value minus expected
value l value divided by expected value times 100
Find density given unknown concentration graph y=mx+b -- Answer
✔✔ y is density and x is mass % so sub value of y to find x
Density formula -- Answer ✔✔ mass/ volume
Hydrate definition -- Answer ✔✔ crystalline compound in which one or
more water molecules combine with formula unit of walt that loses
water above 100c
% water= mass water lost/ mass hydrate times 100 -- Answer ✔✔
Mass water lost= -- Answer ✔✔ unheated mass minus mass after
heating
PH2= -- Answer ✔✔ ptotal - pvapor
Ptotal= patm-pfluid -- Answer ✔✔
h1d1=h2d2 -- Answer ✔✔
p1v1/t1=P2V2/T2 -- Answer ✔✔
Molarity= moles/volume in L -- Answer ✔✔
, Q= -- Answer ✔✔ mCgDelta T Q is the symbol for heat transfer, m is
the mass of the substance, and ΔT is the change in temperature. The
symbol c stands for specific heat and depends on the material and
phase
Lowest energy color -- Answer ✔✔ red
Smallest electronic transitions -- Answer ✔✔ lowest atomic #
Highest energy color is -- Answer ✔✔ violet
molality= -- Answer ✔✔ moles/kg
Calculate i= -- Answer ✔✔ mass particles/ moles compound dissolved
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
