SM0486
You determine the volume of the brass standard by using the first formula, and
substituting the given values for the mass and density of brass.
You determine the volume of the stainless steel mass by using the second formula
and substituting the given values for the mass and density of the stainless steel
mass.
Because the buoyant effect is proportional to
the
difference
between
the
two
volumes, the volumetric difference is found by
ΔV
=
VBr - Vas
11.9 cm3 - 10 cm3
=
l.9 cm3
=
j. Knowing that the volume of a mass can be determined from the formula V =
M, we can transpose values in the formula to develop the formula for mass in terms
P
of volume and density, M = (V)(p). Using 1.9 cm3 (the
136
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